The most annoying things about air travel

We recently asked our friends on Twitter to share the one thing they find the most annoying, frustrating, and downright maddening about air travel—and as it turns out, there are a lot of things to get angry about. A few things that never cease to irk people? Delayed flights, confusing airport terminals, and—this one's a biggie—people who recline their airplane seat back into our laps.

Here are a few of our favorite (or least favorite?) pet peeves we gathered from the Twittersphere. 

What would you add to the list?