Definitions.

CFR · 2024-01-01 · US · Title 14

(1) Between a place in— (i) A State, territory, or possession of the United States and a place in the District of Columbia or another State, territory, or possession of the United States; (ii) Hawaii and another place in Hawaii through the airspace over a place outside Hawaii; (iii) The District of Columbia and another place in the District of Columbia; or (iv) A territory or possession of the United States and another place in the same territory or possession; and (2) When any part of the transportation is by aircraft.

official document · source cfr-2024 · id 14:§ 291.2