41 C.F.R. § 301-10.137 What exceptions to the Fly America Act requirements apply when I travel solely outside the United States, and a U.S. flag air carrier provides service between my origin and my destination?
Title 41 - Public Contracts and Property Management
You must always use a U.S. flag carrier for such travel, unless, when compared to using a foreign air carrier, such use would: (a) Increase the number of aircraft changes you must make en route by 2 or more; or (b) Extend your travel time by 6 hours or more; or (c) Require a connecting time of 4 hours or more at an overseas interchange point.
Title 41: Public Contracts and Property Management
PART 301–10—TRANSPORTATION EXPENSES
Subpart B—Common Carrier Transportation
Use of United States Flag Air Carriers
§ 301-10.137 What exceptions to the Fly America Act requirements apply when I travel solely outside the United States, and a U.S. flag air carrier provides service between my origin and my destination?