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🇺🇸 Southwest Baggage Allowance

Southwest baggage allowance for standard economy: a carry-on up to 10 kg (61×38×28 cm), a checked bag up to 23 kg, and 2 free checked bags. Here's the full breakdown — and how to stay under the limit with OneBag.

📋 Southwest baggage at a glance

Carry-on (cabin) weight limit10 kg
Carry-on max size61×38×28 cm
Checked bag weight limit23 kg
Free checked bags (economy)2
Personal item allowedYes

ℹ️ Figures are for standard economy and reflect the airline's published limits. Fares, routes and frequent-flyer tiers can change these — always confirm on Southwest's official website before you fly.

🧳 Carry-on rules

Yes — a personal item (small bag / laptop bag) is allowed in addition. To clear the gate sizer easily, keep your cabin bag within 61×38×28 cm and under 10 kg. A soft, slightly flexible bag is more forgiving than a rigid case.

🎒 Checked baggage

The standard checked allowance is 23 kg per bag. 2 free checked bags. Overweight bags trigger fees that often cost more than the ticket — weigh before you leave home.

💡 OneBag tip: Add Southwest in OneBag and the app tracks your packed weight live against the 10 kg cabin / 23 kg checked limit — with separate progress bars for each bag, so you never get stopped at the gate.

Southwest baggage FAQ

What is Southwest's carry-on weight limit?

Southwest allows a cabin bag of up to 10 kg in standard economy, with maximum dimensions around 61×38×28 cm. Always confirm on the airline's official site, as limits can change by fare and route.

How big can my cabin bag be on Southwest?

The Southwest cabin bag size limit is approximately 61×38×28 cm (length × width × height). Soft bags that flex slightly help you fit the sizer at the gate.

Does Southwest include a free checked bag?

2 free checked bags. The standard checked bag weight limit is 23 kg. Check your specific fare — basic/light fares often exclude checked baggage.

How do I avoid Southwest excess baggage fees?

Weigh your bag before leaving home and keep it under 10 kg carry-on / 23 kg checked. OneBag tracks your packed weight live against Southwest's exact limit so there are no surprises at the gate.

Never pay an overweight fee again 🎒

OneBag tracks your bag weight against Southwest's exact limit — plus smart packing lists for any destination. Free.

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