These Airlines Charge You the Most in Extra Fees

Spirit Airlines is known for super cheap airfare: Right now, for instance, the carrier is advertising flights that cost as little as $25.

That sounds pretty awesome. But if you want a realistic idea for how much a whole flight will probably wind up costing, add $100.

According to a new study from IdeaWorksCompany, in 2016 Spirit received an industry-leading $49.89 per passenger in "ancillary revenues"—a.k.a.