( CNN ) -- Are those airline baggage and cancellation fees taking a bite out of your wallet ? They 're certainly making money for U.S. airlines , which collected $ 6.16 billion last year : $ 3.35 billion in baggage fees and $ 2.81 billion in reservation change fees , according to U.S. Department of Transportation data released Monday . That 's a slight increase from $ 6.04 billion collected in 2012 . Those ancillary fees helped the 26 passenger U.S. airlines make a net profit of $ 12.7 billion in 2013 , up from a profit of $ 98 million in 2012 . Delta Air Lines topped the list , collecting $ 1.67 billion last year : $ 840 million in reservation change/cancellation fees and $ 833 million in baggage fees . United Airlines came in second place , with $ 1.38 billion in fees : $ 756 million in reservation cancellation/change fees and nearly $ 625 million in baggage fees . And the world 's best airport is ... The new airline created by the merger of American Airlines and U.S. Airways , which are still reporting their data separately , would have topped the list if their fees were added together . The combined airline collected more than $ 1 billion in baggage fees and $ 848 million in reservation cancellation and change fees . Reporting as two airlines , American ranked third in the reservation cancellation and change fee category , collecting $ 521 million in fees , while US Airways came in fourth place with $ 327 million . U.S. Airways was third for baggage fees with $ 528 million , while American collected $ 506 million to come in fourth . American was the first U.S. airline to charge customers to check bags in June 2008 , for a fee of $ 15 . That year , American collected $ 277,991 in baggage fees , according to Department of Transportation data . Other U.S. airlines quickly followed suit , and as a group they collected $ 1.1 million that year . Fees have since crept up ; American now charges $ 25 for the first checked bag , with some exceptions . . Which extra fees do you pay for when you fly and which fees will you not pay ? Please share in the comments section below .
U.S. airlines made $ 6.16 billion in baggage and reservation change fees last year . Delta Air Lines made the most money in fees , collecting more than $ 1.6 billion . The combined American-U.S. Airways airline may top Delta next year .