For Your Convenience, Our Travel Advisors are available Monday-Friday 8am-7pm EST
Phone: 301-816-8991
Toll Free: 1-800-638-8500
Emergency After Hours 1-877-853-3648
Emergency After Hours Outside USA: 1-516-730-2648
Email Travel Request: NIH@worldtravelservice.com
To Cancel Reservation: cancel@wordltravelservice.com
Customer Service: mgt@worldtravelservice.com
WorldTravelService
6010 Executive Blvd
Suite 202
Rockville, MD 20852
