SmarterTravel.com recently listed the six most annoying airline fees and two frequent flyer program fees made the list, a frequent flyer award processing fee, like the $75 fee American and United charge for ticketing an award flight less than 21 days out. “That’s 100 percent pure gouge …” says SmarterTravel. “You do it online, the computers do all the work, and your booking date has no effect whatsoever on the airline’s processing costs. Fortunately, Delta doesn’t hit you with this one.”

Another FFP fee that made this list is the “carrier imposed” surcharges on award tickets, also known as fuel surcharges. SmarterTravel says, “These fees are a pure gouge and an outright scam.”