What Are the Standard Dimensions of the Space Under an Airline Seat?

What Are the Standard Dimensions of the Space Under an Airline Seat?

What Are the Standard Dimensions of the Space Under an Airline Seat?

The amount of space under a seat varies slightly from airline to airline, and different planes also have different under-seat dimensions. For a Delta Airlines Boeing 757-300, the under-seat dimensions are 20 inches wide, 17 inches deep and about 11 inches tall.

For an American Airlines 737-800, the under-seat dimensions are 20 inches by 17 inches by 11.75 inches. A Continental 737-800/900 has slightly less room than the same American Airlines plane. A Southwest Airlines 737-800 has under-seat dimensions of 19 inches by 19 inches by 9.5 inches, and in a United Airlines 757-200, the dimensions are 17 inches by 20 inches by 10.5 inches. However, it is possible for the airline to prohibit a piece of baggage that fits these dimensions.