Southwest Airlines Baggage Size & Weight Limits
This page lists the Southwest Airlines cabin and checked baggage allowances, including maximum dimensions, weight limits and excess baggage fees. Use the size checker to confirm your own suitcase fits before you get to the airport.
What is carry-on, personal item and checked baggage?Baggage allowance for Southwest Airlines · check fare, route and operating-carrier conditions before travel
A handbag, laptop bag or small backpack that fits under the seat in front of you.
One cabin bag per passenger. Measured with wheels and handles included.
Southwest standard checked bag limit is 62 linear inches (157 cm) and 50 lb (23 kg). Since April 9, 2026, Basic, Choice and Choice Preferred normally pay for checked bags; Choice Extra includes two.
Allowance by Cabin Class / Fare
Baggage allowance for Southwest Airlines · check fare, route and operating-carrier conditions before travel
Excess & Oversize Fees (USD)
Fees vary by route and are usually cheaper when paid online before travel than at the airport.
Good to Know
Will your bag fit Southwest Airlines?
Enter your suitcase dimensions in the size checker and see instantly whether it meets these limits.
Check my bag for Southwest AirlinesThe three baggage types, explained
Airlines split what you travel with into three allowances. Each has its own size and weight limit, and the one you exceed decides what you pay.
The small bag that goes under the seat in front of you — handbag, laptop bag or small backpack. Usually free and rarely weighed.
The wheeled case you take into the cabin and store in the overhead bin. Sized at the gate, and weighed by many airlines.
The large suitcase you hand over at the desk and collect at your destination. Charged by bag, with strict weight limits.
Frequently Asked Questions
Yes, Southwest Airlines typically allows free carry-on baggage within their specified size and weight limits. Check the dimensions above to ensure your bag complies with Southwest Airlines regulations.