Understanding Southwest Airlines carry-on rules can help travelers avoid airport stress, save money on baggage fees, and pack more efficiently.
Southwest remains one of the most popular US airlines thanks to its traveler-friendly baggage policies, including free checked bags for most passengers.
In this guide, we’ll explain Southwest carry-on size limits, personal item rules, checked baggage allowances, and useful travel tips for your next flight.
Southwest Carry-On Baggage Policy
Southwest Airlines allows passengers to bring:
- 1 Carry-On Bag
- 1 Personal Item
The carry-on bag must fit in the overhead bin, while personal items should fit underneath the seat in front of you.
Southwest Carry-On Size Limit
- Maximum Dimensions: 24 x 16 x 10 inches
This includes wheels, handles, and external compartments.
Examples of Personal Items
- Purse or handbag
- Laptop bag
- Small backpack
- Briefcase
- Tablet or camera bag
Passengers should ensure personal items fit comfortably under the seat to avoid boarding delays.
Southwest Checked Baggage Policy
One of Southwest’s biggest advantages is its generous checked baggage allowance.
Free Checked Bags
Most Southwest passengers can check:
- 2 Checked Bags Free
This policy makes Southwest especially attractive for families, long vacations, and travelers carrying extra luggage.
Checked Bag Size & Weight Limits
- Maximum Weight: 50 lbs (23 kg)
- Maximum Size: 62 linear inches
Bags exceeding these limits may incur overweight or oversized baggage fees.
Overweight & Oversized Bag Fees
Additional charges may apply for:
- Bags weighing more than 50 lbs
- Oversized suitcases
- Special sporting equipment
Travelers carrying heavy luggage should weigh bags before arriving at the airport to avoid unexpected charges.
Southwest Boarding Process
Unlike many airlines, Southwest uses an open seating system instead of assigned seats.
Passengers board based on:
- Check-in timing
- Boarding group
- Fare type
Early boarding can improve your chances of finding overhead bin space for carry-on bags.
Special Items & Sports Equipment
Southwest allows travelers to check various special items including:
- Golf clubs
- Skis and snowboards
- Bicycles
- Surfboards
- Musical instruments
- Strollers and child equipment
Some oversized items may require special handling or additional fees.
Tips for Traveling with Southwest Airlines
- Check in exactly 24 hours before departure
- Use carry-on luggage for faster airport exits
- Take advantage of free checked bags
- Pack efficiently to avoid overweight fees
- Board early for better overhead storage access
- Review baggage rules before holiday travel
Southwest’s baggage policies often make it one of the best-value airlines for domestic US travelers.
Why Travelers Choose Southwest Airlines
Southwest remains popular because of its:
- Free checked baggage allowance
- No change fees on many fares
- Extensive domestic route network
- Flexible booking options
- Frequent flight schedules
Families and budget-conscious travelers especially appreciate the airline’s simple baggage policies.
TravelMozo Travel Tips
If you’re comparing airline baggage rules before booking flights, you can also explore our guide on Delta Air Lines baggage policy.
You can additionally check our flight route guides including cheap flights from New York to Miami, Chicago to Orlando flights, and Los Angeles to Las Vegas flights.
Final Thoughts
Southwest Airlines offers one of the most traveler-friendly baggage policies among major US airlines.
With free checked bags, reasonable carry-on limits, and flexible booking policies, Southwest remains a strong option for both short domestic trips and family vacations.
TravelMozo will continue publishing airline guides, airport information, and flight booking tips to help travelers make smarter travel decisions.
Frequently Asked Questions
How many carry-on bags does Southwest allow?
Passengers can bring one carry-on bag and one personal item.
Does Southwest still offer free checked bags?
Yes, most passengers can check two bags free of charge.
What is the Southwest carry-on size limit?
The maximum carry-on dimensions are 24 x 16 x 10 inches.
Can I bring a backpack as a personal item?
Yes, small backpacks that fit under the seat are generally allowed as personal items.