The draw-down of long-haul flights by US carriers comes as international traffic has been hit with country-by-country restrictions on travelers. These include outright restrictions on arrivals to mandatory quarantines or just COVID-19 testing upon landing.
Those depressed international schedules may take time to rebuild. The International air transportation Association (IATA) doesn't expect international passenger numbers to return to 2019 levels until 2023 or 2024. That's the maximum amount as two years after domestic numbers return to pre-coronavirus levels.