Federal employees and their dependents, consultants, contractors, grantees, and others must use U.S.-flag air carriers for U.S. Government-financed international air travel and transportation of their personal effects or property, if available (section 5 of the International Air Transportation Fair Competitive Practices Act of 1974 (49 U.S.C. 40118 ) (Fly America Act)).
48 C.F.R. §47.402