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Southwest Airlines Carry-On Size & Bag Rules
Southwest Airlines is a major US carrier known for no change fees and generous baggage policies. All fares include a carry-on bag and a personal item at no extra charge. There is no weight limit for either.
Personal Item
Under the seat
No size restriction
Must fit under the seat in front of you
Cabin Bag
Overhead bin
Length
24.0
in
Width
16.0
in
Height
10.0
in
All passengers may bring 1 carry-on bag and 1 personal item at no charge. There is no weight limit. Checked bags now incur fees ($35 first bag, $45 second).
Will Your Bag Fit on Southwest Airlines?
Enter your bag dimensions and we'll check Southwest Airlines's allowances instantly.
Your bag dimensions
How to Measure
Length — tallest dimension, from floor to top of handle/wheels
Width — widest side, including external pockets
Depth — front to back, at the thickest point
Always measure the full external size — wheels, handles, and pockets count. Manufacturer specs often exclude these.
What is the Squish Score?
Not all bags are rigid boxes. A soft bag that is slightly over the limit can still squeeze into a gate sizer if the material compresses. We rate bags from 1–5:
Top Bags That Fit Southwest Airlines
Bags that fit Southwest Airlines's carry-on limits.
