Traveling with Southwest Airlines offers flexibility and value, especially with their passenger-friendly baggage policies. Whether you’re checking a bag or bringing a carry-on, understanding the latest fees and size restrictions ensures a smooth journey. Below, we break down Southwest checked baggage fees, overweight/oversized charges, and carry-on size limits for 2025.
Southwest Airlines Checked Baggage Fees (2025)
Southwest Airline stands out among U.S. airlines by allowing two free checked bags per passenger—a major perk for budget-conscious travelers. However, additional or overweight luggage may incur fees.
Standard Checked Baggage Allowance
First & Second Checked Bag: Free (within size and weight limits)
Third Checked Bag and Beyond: $125 per bag
Weight & Size Restrictions
Max Weight: 50 lbs (23 kg) per bag
Max Size: 62 linear inches (L + W + H)
Excess Baggage Fees
Overweight Bags (51–100 lbs): $100 per bag
Oversized Bags (63–80 linear inches): $125 per bag
Overweight + Oversized: $225 per bag
Bags over 100 lbs or 80+ linear inches: Not accepted
Pro Tip: Weigh and measure your bags before arriving at the airport to avoid unexpected fees.
Southwest Airlines Carry-On Size & Policies
Southwest permits one carry-on bag plus one personal item at no extra charge, provided they meet size requirements.
Carry-On Size Limits
Max Dimensions: 24 x 16 x 10 inches (including handles and wheels)
Personal Item: 18.5 x 8.5 x 13.5 inches (e.g., purse, laptop bag, small backpack)
Key Restrictions
Overhead bins fill quickly—boarding early ensures space for your carry-on.
Oversized carry-ons may need to be checked, potentially incurring fees if exceeding free allowance.
How to Avoid Southwest Baggage Fees
Stick to Two Checked Bags – Southwest’s free allowance is generous.
Pack Light – Keep checked bags under 50 lbs to dodge overweight fees.
Use a Personal Item + Carry-On – Maximize free storage without checking luggage.
Consider EarlyBird Check-In – Secures earlier boarding for better overhead bin access.
Final Thoughts
Southwest Airlines remains a top choice for travelers seeking affordability and flexibility. With two free checked bags and reasonable carry-on policies, packing smart can help you avoid extra costs. Always verify the latest guidelines before flying, as policies may adjust.
For the most current baggage fee details, visit Southwest Airlines official baggage policy page.