21725 E Gateway Center DrDiamond Bar, CA 91765 Phone: +1 909-860-5440Fax: +1 909-860-8224Toll Free: +800-050-1933 Hotel E-mailHotel Website Classification 6 First Class Commission Rooms Rates 10% 176 $103-$269 (USD) Hoteliers! Is your information accurate? Update Here Holiday Inn Diamond Bar-Ponoma Location & Neighborhood Downtown - 37 MI, 1 hr from Los Angeles Intl airport. 13 MI from OntarioNearest Cross Street: Golden Springs RdHotel Location: Airport, Highway, Mountain, Suburban, Tourist