TITLE 41 - PUBLIC CONTRACTS AND PROPERTY MANAGEMENT

SUBTITLE F - FEDERAL TRAVEL REGULATION SYSTEM

CHAPTER 301 - TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES

SUBCHAPTER B - ALLOWABLE TRAVEL EXPENSES

PART 301 - 10 - TRANSPORTATION EXPENSES

subpart b - COMMON CARRIER TRANSPORTATION

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?

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.