Southwest Airlines passengers

A survey found that uncomfortable seats were the top gripe of airline passengers. (Sandy Huffaker / Getty Images)

  • Also
  • TSA finds weapons in the strangest places Photos: TSA finds weapons in the strangest places
  • Ships of doom: Some of history's worst shipwrecks Photos: Ships of doom: Some of history's worst shipwrecks
  • Miss you, Backdraft! The top 10 theme park rides we loved and lost Photos: Miss you, Backdraft! The top 10 theme park rides we loved and lost

Airline fees are among the most annoying aspect of commercial flying, but the biggest gripes among passengers are uncomfortable seats and tight legroom.

That was one of the key findings of the latest survey of more than 2,000 people in the U.S. by the travel review site TripAdvisor.com.

After uncomfortable seats and hefty passenger fees, the travelers who were surveyed said unpredictable flight delays, long security lines and obnoxious passengers were the biggest annoyances.

The most irritating fees, according to the survey, are charges to check bags, carry bags into the cabin, upgrade to a better seat, print a boarding pass and buy in-flight extras.

With all of those complaints, you might think fewer people would want to fly.

Instead, 91% of those who were surveyed said they planned to take a flight at least once in 2013, up from 86% who said they flew last year.

“It seems equally clear that these challenges are not limiting the increasing demand for flights,” said Bryan Saltzburg, a general manager at TripAdvisor.

ALSO:

Airlines shrink seats, offer extra legroom for a fee 

Denver firm designs airline seat that slides

Heard about airline seats that double as toilets? Utter loo-nacy