OK, so those are "extra services," but what about charging for the seat?
May 30, discount airline Spirit started charging passengers just to reserve a seat assignment in advance. It now costs passengers $15 for an exit row seat on Spirit, $10 for an aisle or a window and $5 for that dreaded middle seat. And that is one-way.
JetBlue also charges passengers more for specific requests. On April 1, JetBlue began charging $10 and more for additional leg room. Travelers who pay the price will receive four more inches of leg room in the A320 fleet. The longer the flight, the more you'll pay for the perk. There are six rows with the extra legroom on JetBlue planes.