[jegutman]

This has been brewing in my mind so adding a few more:

* Canceling the return flight if you miss your fight out, even if it was an un-intentional miss.

* (not all airlines) Charging more that the cost of a round-trip ticket for a one-way ticket.

* Making it intentionally difficult to report a problem: Hiding customer service phone numbers, having 1500 character limits on the web forms and no e-mail customer service (to reply to a reply you have to go back to the web form).

* Having lines to check bags that take over an hour to sort through (I avoid checking bags, but not everybody I travel with does).

* Trying to sell bonus miles (correct me if I'm wrong, but these seem like they're always bad value).

* Trying to sell trip insurance (this in particular seems as overpriced as "additional insurance" at a car-rental place).