Hampton Inn Customer Service Phone Numbers Customer care: +1 703 883 5381 Hampton Inn General questions Number:  Customer Service: 1-800-426-7866 Hampton Inn Dispute Number: Hampton Inn toll free: 1-800-HAMPTON Guest Assistance:1-800-426-7866 Online Reservation assistance:1-800-560-7809 Customers outside the US:00-1-800-560-7809 TDDY/TTY; 1-800-368-1133 Hilton Reservations: 1-800-445-8667 Hilton Honors frequent guest program: 1-800-548-8690 Meeting and Group Planning assistance: 1-800-321-3232 Travel Agent Commission