Originally Posted by newarkb

Long time lurker, first time poster.

Does anyone know the maximum dimensions for typical domestic "under-seat/seat-side" carry-ons? The depth (distance from floor to underside of seat) and the width (distance from left leg of the seat to the right leg of the seat) are probably the most important dimensions.

I usually fly on a 737-700 (Southwest - company preferred), so it'd be nice not having to worry about finding an available seat that also has ample overhead compartment availability.

Any help would be greatly appreciated. Thank you very much.