Costa Cruise Lines Costa Diadema Cruise Itineraries

Select an upcoming Costa Diadema cruise itinerary list below to find a Costa Diadema sailing itinerary by cruise area or departure port.

Group Cruises by:   Destination  |  Date  |  Cruise
European Inland Waterways
09/25/2026
3 Night European Inland Waterways Cruise
on the Costa Cruise Lines Costa Diadema departing from Palma de Mallorca, Mallorca Island, Balearic Islands, Spain
Interior
Oceanview
Balcony
Suite
$409
-
-
-
10/31/2026
3 Night European Inland Waterways Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
09/22/2026
4 Night European Inland Waterways Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$639
$839
$1,159
$1,309
09/23/2026
4 Night European Inland Waterways Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$637
$837
$1,197
$2,332
10/28/2026
4 Night European Inland Waterways Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$589
$779
$1,099
$1,239
10/29/2026
4 Night European Inland Waterways Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$587
$777
$1,097
$1,237
09/21/2026
7 Night European Inland Waterways Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$1,076
$1,911
$2,561
-
Mediterranean Western
09/28/2026
2 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
10/04/2026
5 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Malaga, Spain
Interior
Oceanview
Balcony
Suite
$796
$906
$1,356
-
10/25/2026
6 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Malaga, Spain
Interior
Oceanview
Balcony
Suite
$756
$876
$1,166
$1,316
10/07/2026
10 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$1,727
$1,967
$2,597
$2,927
10/08/2026
10 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$1,784
$2,124
$2,744
-
10/09/2026
10 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$1,816
$1,956
$2,576
-
10/15/2026
10 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Malaga, Spain
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
10/21/2026
10 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Cadiz, Spain
Interior
Oceanview
Balcony
Suite
$1,262
$1,342
$1,852
$3,052
09/26/2026
11 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$1,797
$2,057
$2,797
$3,167
09/27/2026
11 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$1,624
$1,914
$2,944
$3,334
09/28/2026
11 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$1,816
$2,046
$2,856
-
10/04/2026
11 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Malaga, Spain
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
10/17/2026
11 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$1,697
$1,957
$2,697
$3,047
10/18/2026
11 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$1,614
$1,914
$2,614
$2,954
10/19/2026
12 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$1,836
$2,086
$3,006
-
09/30/2026
13 Night Western Mediterranean Cruise
on the Costa Cruise Lines Costa Diadema departing from Cadiz, Spain
Interior
Oceanview
Balcony
Suite
$1,731
$1,961
$2,761
-
Scandinavia & Northern Europe
06/12/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
06/12/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,397
$1,559
$1,964
$2,225
06/13/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
06/13/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$795
$995
$1,805
-
06/19/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,637
$1,767
$2,227
$3,457
06/19/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
06/20/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,558
$1,908
-
-
06/26/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,615
$1,755
$2,215
$2,505
06/26/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
06/27/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,485
$1,865
$2,075
$3,585
07/03/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
07/03/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,667
$1,847
$2,297
$2,607
07/04/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,838
$2,158
$2,778
-
07/10/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,677
$1,857
$2,317
$2,627
07/10/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
07/11/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,698
$2,008
$2,218
-
07/17/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
07/17/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,886
$2,396
$2,646
$3,006
07/18/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,867
$2,167
$2,437
$2,757
07/24/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,975
$2,115
$2,565
$2,915
07/24/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
07/25/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$2,005
$2,145
$2,595
$2,945
07/31/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$2,027
$2,207
$2,687
$2,917
07/31/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
08/01/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$2,008
$2,148
$2,598
$2,948
08/07/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$2,007
$2,137
$2,597
$2,947
08/07/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
08/08/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$2,108
$2,388
$2,658
$3,018
08/14/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
08/14/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,977
$2,117
$2,567
$2,917
08/15/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$2,008
$2,148
$2,598
$2,948
08/21/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
08/21/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,617
$1,757
$2,217
$2,507
08/22/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,728
$2,038
$2,238
$2,528
08/28/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,515
$1,635
$2,055
$2,325
08/28/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
08/29/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,515
$1,905
$2,025
$2,295
09/04/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,515
$1,635
$2,055
$2,325
09/04/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
09/05/2026
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,645
$1,975
$2,195
$3,675
04/30/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,011
$1,271
$1,471
$1,661
05/01/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,042
$1,302
$1,502
$1,692
05/07/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,053
$1,313
$1,513
$1,713
05/08/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,084
$1,344
$1,544
$1,744
05/14/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,094
$1,354
$1,564
$1,754
05/15/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,125
$1,385
$1,595
$1,785
05/21/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,136
$1,416
$1,646
$1,856
05/22/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,167
$1,447
$1,677
$1,887
05/28/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,184
$1,454
$1,684
$1,904
05/29/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,214
$1,484
$1,714
$1,934
06/04/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,227
$1,507
$1,737
$1,957
06/05/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,258
$1,538
$1,768
$1,988
06/11/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,267
$1,547
$1,777
$2,007
06/12/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,298
$1,578
$1,808
$2,038
06/18/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,307
$1,607
$1,857
$2,107
06/19/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,338
$1,638
$1,888
$2,138
06/25/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,354
$1,644
$1,904
$2,154
06/26/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,385
$1,675
$1,935
$2,185
07/02/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,397
$1,687
$1,947
$2,197
07/03/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,428
$1,718
$1,978
$2,228
07/09/2027
7 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,435
$1,735
$1,985
$2,245
05/07/2027
14 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$2,018
$2,538
$2,948
$5,018
05/14/2027
14 Night Scandinavia & Northern Europe Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$2,101
$2,631
$3,041
$5,121
South America
11/23/2026
2 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$507
$537
$577
$627
11/23/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$744
$804
$864
$944
11/25/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$609
$669
$729
$809
11/26/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$744
$804
$864
$944
12/02/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$459
$509
$569
$619
12/03/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$684
$744
$824
$894
12/09/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$499
$539
$589
$649
12/10/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$724
$784
$854
$924
12/16/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$499
$539
$599
$659
12/17/2026
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$724
$784
$864
$934
03/18/2027
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$489
$529
$559
$884
03/24/2027
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$491
$541
$581
$631
03/25/2027
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$737
$797
$857
$927
03/31/2027
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$551
$591
$651
$986
04/01/2027
3 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$687
$727
$787
$857
11/28/2026
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$631
$701
$781
$861
11/29/2026
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$847
$927
$1,027
$1,127
12/05/2026
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$631
$701
$781
$1,206
12/06/2026
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$847
$927
$1,027
$1,127
12/12/2026
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$611
$671
$731
$811
12/13/2026
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$877
$947
$1,037
$1,127
03/17/2027
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$640
$690
$730
$790
03/20/2027
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$561
$611
$671
$741
03/21/2027
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$807
$877
$957
$1,037
03/27/2027
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$611
$661
$721
$1,276
03/28/2027
4 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$837
$897
$977
$1,067
12/19/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$1,186
$1,286
$1,376
$1,516
12/20/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,591
$1,721
$1,821
$2,021
12/23/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,482
$1,612
$1,712
$1,912
12/24/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$1,282
$1,382
$1,472
-
12/26/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$1,286
$1,386
$1,476
$1,636
12/27/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,721
$1,851
$1,971
$2,191
12/30/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,612
$1,742
$1,862
$2,082
12/31/2026
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$1,072
$1,162
$1,222
$2,002
01/02/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$1,076
$1,166
$1,226
$1,356
01/03/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,441
$1,561
$1,641
$1,811
01/06/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,332
$1,452
$1,532
$1,702
01/07/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$1,002
$1,092
$1,152
$1,922
01/09/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$1,006
$1,096
$1,156
$1,276
01/10/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,351
$1,471
$1,551
$1,711
01/13/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,242
$1,362
$1,442
$1,602
01/14/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$1,302
$1,392
$1,452
$2,272
01/16/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$1,306
$1,396
$1,456
$1,616
01/17/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,741
$1,871
$1,951
$2,131
01/20/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,632
$1,762
$1,842
$2,022
01/21/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$972
$1,072
$1,132
$1,892
01/23/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$976
$1,076
$1,136
$1,246
01/24/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,311
$1,441
$1,521
$1,671
01/27/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,202
$1,332
$1,412
$1,562
01/28/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$972
$1,062
$1,122
$1,882
01/30/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$976
$1,066
$1,126
$1,236
01/31/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,301
$1,431
$1,511
$1,651
02/03/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,192
$1,322
$1,402
$1,542
02/04/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$972
$1,062
$1,122
$1,882
02/06/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$976
$1,066
$1,126
$1,236
02/07/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,301
$1,431
$1,511
$1,651
02/10/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,192
$1,322
$1,402
$1,542
02/13/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$956
$1,046
$1,106
$1,216
02/14/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,281
$1,401
$1,481
$1,631
02/17/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,172
$1,292
$1,372
$1,522
02/18/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$952
$1,042
$1,102
$1,862
02/20/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$956
$1,046
$1,106
$1,216
02/21/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,281
$1,401
$1,481
$1,631
02/24/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,172
$1,292
$1,372
$1,522
02/25/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$972
$1,062
$1,122
$1,882
02/27/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$976
$1,066
$1,126
$1,236
02/28/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,301
$1,431
$1,511
$1,651
03/03/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,192
$1,322
$1,402
$1,542
03/04/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$942
$1,032
$1,092
$1,852
03/06/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$946
$1,036
$1,096
$1,206
03/07/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,271
$1,391
$1,471
$1,621
03/10/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Buenos Aires, Argentina
Interior
Oceanview
Balcony
Suite
$1,162
$1,282
$1,362
$1,512
03/11/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Montevideo, Uruguay
Interior
Oceanview
Balcony
Suite
$922
$1,022
$1,082
$1,832
03/13/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
$926
$1,026
$1,086
$1,186
03/14/2027
7 Night South American Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$1,251
$1,371
$1,451
$1,591
Transatlantic
09/11/2026
4 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
09/21/2026
4 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$549
$759
$1,069
-
04/04/2027
5 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
11/02/2026
6 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$621
$721
$821
$1,431
11/02/2026
8 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$833
$953
$1,103
-
04/22/2027
8 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Leixoes, Portugal
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
09/12/2026
9 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,087
$1,197
$1,547
$2,957
11/02/2026
9 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$897
$1,037
$1,197
-
09/11/2026
10 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,183
$1,323
$1,703
$3,223
09/12/2026
10 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,211
$1,351
$1,731
-
09/11/2026
11 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,287
$1,427
$1,857
$2,077
09/12/2026
11 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Copenhagen, Denmark
Interior
Oceanview
Balcony
Suite
$1,301
$1,441
$1,871
$3,051
11/11/2026
11 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Santa Cruz de Tenerife, Tenerife Island, Canary Islands, Spain
Interior
Oceanview
Balcony
Suite
$1,082
$1,252
$1,452
-
09/11/2026
12 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Kiel, Germany
Interior
Oceanview
Balcony
Suite
$1,367
$1,527
$1,987
$3,282
11/10/2026
12 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Las Palmas, Gran Canaria Island, Canary Islands, Spain
Interior
Oceanview
Balcony
Suite
$1,149
$1,339
$1,559
-
11/11/2026
12 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Santa Cruz de Tenerife, Tenerife Island, Canary Islands, Spain
Interior
Oceanview
Balcony
Suite
$1,243
$1,433
$1,653
-
11/10/2026
13 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Las Palmas, Gran Canaria Island, Canary Islands, Spain
Interior
Oceanview
Balcony
Suite
$1,391
$1,591
$1,821
-
11/08/2026
14 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Lisbon, Portugal
Interior
Oceanview
Balcony
Suite
$1,364
$1,584
$1,834
-
11/08/2026
15 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Lisbon, Portugal
Interior
Oceanview
Balcony
Suite
$1,535
$1,765
$2,035
-
04/05/2027
17 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Rio de Janeiro, Brazil
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
04/04/2027
18 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
11/03/2026
19 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$1,702
$2,002
$2,342
-
11/02/2026
20 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$1,774
$2,094
$2,444
$4,474
11/03/2026
20 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$1,864
$2,184
$2,534
$2,824
11/01/2026
21 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$1,836
$2,176
$2,546
-
11/02/2026
21 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$1,935
$2,275
$2,645
$2,955
04/09/2027
21 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Maceio, Brazil
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
11/01/2026
22 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$2,048
$2,398
$2,788
-
11/03/2026
22 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Barcelona, Spain
Interior
Oceanview
Balcony
Suite
$2,006
$2,356
$2,746
$4,981
04/04/2027
22 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$2,073
$2,543
$2,863
$5,448
11/02/2026
23 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Savona, Italy
Interior
Oceanview
Balcony
Suite
$2,078
$2,438
$2,848
$3,188
11/01/2026
24 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Marseille, France
Interior
Oceanview
Balcony
Suite
$2,141
$2,521
-
-
04/05/2027
25 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Rio de Janeiro, Brazil
Interior
Oceanview
Balcony
Suite
$2,162
$2,702
$3,062
$6,002
04/04/2027
26 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$2,334
$2,884
$3,264
$3,664
04/03/2027
27 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Itajai, Brazil
Interior
Oceanview
Balcony
Suite
Contact cruise line for pricing & availability
04/04/2027
27 Night Transatlantic Cruise
on the Costa Cruise Lines Costa Diadema departing from Santos, Brazil
Interior
Oceanview
Balcony
Suite
$2,420
$2,990
$3,390
-
OCG Class
Mainstream
Costa Diadema
Year Built2014
Year Last Refurbished-
Capacity4,947 passengers
Tonnage132,500
Contact
www.costacruises.com



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