If you're tired of feeling nickel and dimed by airlines charging fees for a host of activities, here's some bad news: They're getting better at it.

According to a new study by CarTrawler, airlines this year are expected to generate an all-time high of $49.9 billion in ancillary revenues worldwide. That would amount to a 17.2 percent increase in fees compared to those in 2013, according to the report.