There are also government-imposed taxes such as the U.S. Transportation Security Administration instituted Passenger Fee, which is charged as soon as the ticket

There are also government-imposed taxes such as the U.S. Transportation Security Administration instituted Passenger Fee, which is charged as soon as the ticket is bought: > "The fee is collected by air carriers from passengers at the time air transportation is purchased," according to TSA. "Air carriers then remit the fees to TSA." (From https://thepointsguy.com/guide/taxes-and-fees-airline-award-tickets/ https://thepointsguy.com/guide/taxes-and-fees-airline-award-...)