Airline fees are definitely not going away anytime soon – not after the second quarter it gave the airline industry. Carriers in the United States raked in $2.1 billion in fees and extra charges in the second quarter of this year, a 13 percent year-over-year surge. And, it was good enough to deliver the sector's first profitable quarter since 2007.

Well, here's the worst part for you: most of it came from checked baggage fees. This annoyance was good for $893 million in the second quarter of 2010, a gain of 16 percent from the second quarter of 2009. Reservation fees were good for $594 million, with ancillary revenue (e.g., frequent flier mileage sales and pet fees) reaching $618 million.

Delta benefited most from the fees that passengers hate most, at $682 million. American Airlines and US Airways were next.

[photo by cliff1066 via Flickr]

Filed under: Business, North America, United States, Airlines