1 Grand Union Square PO Box 1119Fort Benton, MT 59442 Phone: +1 406-622-1882Fax: +1 406-622-5985Toll Free: +888-838-1882 Hotel E-mailHotel Website Commission Rooms Rates - 26 $108-$135 (USD) Hoteliers! Is your information accurate? Update Here Grand Union Hotel Location & Neighborhood Small tourist attraction - 45 MI, 45 min from Great Falls Intl airport. 40 MI from Great Falls