JetBlue offers the most leg room, with 34 or 33 inches between the back of the seat in front of you and the front of yours. The seat width is 18 inches.
Southwest Airlines has 31-33 inches between the front and back of seats and a seat width of 17.3 inches.
Virgin America has 32 inches between seats. Seat width is 19 inches.
Most seats on Delta Air Lines have between 31 and 32 inches but there are some planes that offer up to 36 inches in certain rows.
Allegiant, a low-cost airline, offers between 30 to 34 inches between seats. The seat width is 17 inches.
American Airlines has between 31-32 inches between seat with a seat width between 17 and 18 inches.
*Information compiled from a number of websites that rank airlines.