International segment fee
The international segment fee, formally the international facilities tax or head tax, is the flat per-passenger US tax charged on charter flights that begin or end outside the United States, set at $23.40 per person in 2026 (a lower rate applies to flights between the US mainland and Alaska or Hawaii). It replaces the 7.5% federal excise tax on those sectors. On a $60,000 transatlantic charter for six passengers the fee is a rounding error, whereas the domestic 7.5% on a $60,000 trip would be $4,500, so the choice between a domestic and an international routing has a real tax effect. Other countries levy their own passenger taxes, such as the UK Air Passenger Duty, which is charged at its highest band on business jets.