Top 10 U.S. airlines in 2013 revenue from bag fees:

1. Delta Air Lines, $833.2 million

2. United Airlines, $624.8 million

3. US Airways, $527.6 million

4. American Airlines, $505.7 million

5. Spirit Airlines, $212.0 million

6. Southwest Airlines, $143.5 million

7. Allegiant Air, $112.5 million

8. Alaska Airlines, $96.0 million

9. JetBlue Airways, $74.3 million

10. Hawaiian Airlines, $70.0 million

Top 10 U.S. airlines in 2013 revenue from fees for changing or canceling a reservation:

1. Delta Air Lines, $840.1 million

2. United Airlines, $756.5 million

3. American Airlines, $521.0 million

4. US Airways, $327.3 million

5. JetBlue Airways, $146.4 million

6. Alaska Airlines, $90.0 million

7. Spirit Airlines, $32.5 million

8. Virgin America, $32.2 million

9. Southwest Airlines, $25.3 million

10. Hawaiian Airlines, $17.9 million

(AP)