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Defense Travel Management Office - The DoD Center for Travel Excellence

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Contact Us

Defense Travel Management Office (DTMO)

4800 Mark Center Drive
Suite 04J25-01
Alexandria, VA 22350-9000
571-372-1300

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Travel Assistance

General Travel and Defense Travel System (DTS) Questions

Contact your Local Level Travel Support first.

If your issue cannot be resolved through Local Level Support, contact the Travel Assistance Center (TAC):

Live Chat for select issues (available Mon-Fri 8am – 6pm ET except federal holidays)
Login to Passport and submit an online help desk ticket through TraX.
(available 24/7)
1-888-Help-1-Go
(1-888-435-7146) (available 24/7)

Defense Travel Modernization (DTM) prototype Questions Only

Defense Travel Modernization (DTM) prototype tech support, call
1-844-308-6880

Travel Reservation Questions
or Changes to a Reservation
While on Travel
Contact your Travel Management Company (TMC) listed on your travel itinerary or use the TMC Directory

Government Travel Charge Card Questions
Contact your local Agency Program Coordinator (APC)

Citi Customer Service:
1-800-200-7056
(collect 757-852-9076)

Citi Customer Service For APCs:
1-866-670-6462
(collect 757-853-2467)