This jurisdiction extends to people onboard international air flights. 21 U.S.C. 959(c) states:
Possession, manufacture, or distribution by person on board aircraft
It shall be unlawful for any United States citizen on board any aircraft, or any person on board an aircraft owned by a United States citizen or registered in the United States, to — (1) manufacture or distribute a controlled substance or listed chemical; or (2) possess a controlled substance or listed chemical with intent to distribute.
Congress enacted this statute specifically to extend its jurisdiction over international drug trafficking crimes that actually happened on board aircrafts, one of the historical means of international trafficking. See Public Law 114-154, Transnational Drug Trafficking Act of 2015 (“An Act To provide the Department of Justice with additional tools to target extraterritorial drug trafficking activity, and for other purposes.”)