Southwest Airlines allows passengers to bring one carry-on bag onboard, which must fit in the overhead bin and not exceed the dimensions of 24 x 16 x 10 inches (61 x 40 x 25 cm), including wheels and handles

. In addition to this carry-on bag, passengers are also allowed one small personal item that fits under the seat in front of them, such as a purse, briefcase, laptop bag, or small backpack

. To summarize:

• Carry-on bag: 1 piece, max size 24" x 16" x 10"
• Personal item: 1 piece, must fit under the seat (approximate max size 16.25" x 13.5" x 8")
• No weight limit is specified for either item, but you must be able to lift your carry-on into the overhead bin yourself

This carry-on allowance is standard for all passengers regardless of fare class. Note that Southwest has recently changed its checked baggage policy, now charging fees for checked bags for most passengers starting May 28, 2025, but this does not affect the carry-on allowance

. Therefore, for carry-on luggage on Southwest Airlines, you are allowed one carry-on bag plus one personal item free of charge.