Southwest Airlines · Question
Does Southwest Airlines Charge for Carry-On Bags?
Expert answer updated for 2026, with official sources and links to detailed guides.
No — Southwest Airlines includes a carry-on bag free for most fare types. Here's the complete breakdown of Southwest's carry-on policy.
Southwest Carry-On Bag Rules
Policy: 1 carry-on bag + 1 personal item, free.
A standard carry-on bag must fit in the overhead bin (typically max 22×14×9 inches). A personal item (backpack, purse, laptop bag) must fit under the seat in front of you.
Tips to Avoid Extra Bag Fees
- Know the size limits. If your bag doesn't fit the sizer at the gate, you'll be charged for a checked bag — often at the highest rate.
- Pack light. A personal item (backpack) that fits under the seat is free on every airline. Master this and you never pay bag fees.
- Southwest includes 2 free checked bags with every ticket — the only major U.S. airline to do so.
Compare bag fees across all airlines with our Baggage Fee Calculator. For full Southwest policies, visit southwest.com. Know your passenger rights from the DOT.