Southwest Checked Baggage Weight Limit 2026
Understanding Southwest Airlines' baggage weight limits is crucial for avoiding unexpected fees at the airport. This comprehensive guide covers everything from the standard 50-pound limit to maximum allowances and surcharges.
Southwest Weight Limit Breakdown
Standard Weight
50 lbs
No additional charges for bags at or under this weight (subject to standard baggage fees based on status/fare)
Overweight Tier 1
51-70 lbs
+$100 surcharge per bag in addition to standard baggage fees
Overweight Tier 2
71-100 lbs
+$200 surcharge per bag in addition to standard baggage fees
How Southwest Weight Fees Work
Southwest's weight-based fees are surcharges that add to your standard baggage fees. Understanding how these fees stack is essential for budgeting your trip.
| Bag Weight | Base Fee (No Status) | Weight Surcharge | Total Cost |
|---|---|---|---|
| 1st bag, 50 lbs | $35 | $0 | $35 |
| 1st bag, 65 lbs | $35 | +$100 | $135 |
| 1st bag, 85 lbs | $35 | +$200 | $235 |
| 2nd bag, 50 lbs | $45 | $0 | $45 |
| 2nd bag, 75 lbs | $45 | +$200 | $245 |
Weight Limits by Passenger Type
Different passenger categories have different weight allowances on Southwest Airlines. Here's what you need to know.
Standard Passengers
- • Standard limit: 50 lbs per bag
- • Overweight surcharge: $100 (51-70 lbs) or $200 (71-100 lbs)
- • Maximum weight: 100 lbs (not accepted above)
- • Applies to: All regular passengers regardless of fare type
Active-Duty Military
- • Weight limit: 100 lbs per bag
- • No surcharges: Weight fees waived
- • Unlimited bags: All bags up to 100 lbs each
- • ID required: Valid military ID at check-in
How to Weigh Your Bag Before the Airport
5 Ways to Check Your Bag Weight
- 1
Digital Luggage Scale
The most accurate method - hook your bag and lift to see exact weight
- 2
Bathroom Scale Method
Weigh yourself, then weigh yourself holding the bag, subtract the difference
- 3
Shipping Store
UPS, FedEx, or post office scales can weigh your luggage for free
- 4
Gym Scale
Many gyms have large scales that can accommodate luggage
- 5
Airport Curbside Check-In
Arrive early and repack if needed - they'll tell you the exact weight
Tips to Avoid Overweight Fees
Packing Strategies
- • Pack heavier items in your carry-on (books, electronics)
- • Distribute weight evenly across multiple bags
- • Wear your heaviest shoes and jacket on the plane
- • Use compression bags to reduce bulk and redistribute weight
- • Consider shipping heavy items separately via USPS or UPS
At the Airport
- • Bring an empty duffel bag to redistribute items if needed
- • Remove items and put them in your carry-on or personal item
- • Ask if you can check in at customer service for more time to adjust
- • Consider upgrading to Priority Boarding for extra carry-on space
- • Last resort: Pay for an additional bag rather than overweight fee
Weight Limits for Special Items
Certain special items have unique weight considerations even though they count as checked baggage.
| Item Type | Weight Limit | Notes |
|---|---|---|
| Golf clubs | 50 lbs standard | Overweight fees apply above 50 lbs |
| Skis/snowboards | 50 lbs standard | Two pairs count as one bag |
| Bicycles | 50 lbs standard | Must be in hard-sided case |
| Surfboards | 50 lbs standard | Length restrictions also apply |
| Musical instruments | 50 lbs standard | May need to purchase seat if fragile |
What Happens If Your Bag Is Overweight?
At the Check-In Counter
When you arrive at the Southwest ticket counter or kiosk with baggage, the agent will weigh each bag. Here's what happens if your bag exceeds the weight limit:
51-70 lbs
The agent will inform you of the $100 surcharge. You can either pay it or remove items from your bag to get it under 50 lbs. Most counters have a scale visible so you can see the exact weight.
71-100 lbs
A $200 surcharge applies. This is often more expensive than checking an additional bag, so consider redistributing weight into a second checked bag instead.
Over 100 lbs
The bag will be rejected for air transport. You must remove items or arrange alternative shipping. Southwest cannot accept bags over 100 lbs as checked luggage under any circumstances.
International Flight Weight Limits
Southwest's weight policies apply to all flights, including international destinations. However, there are a few important considerations for international travel.
Special International Considerations
- • Some countries have different weight systems (kg vs lbs) - confirm at check-in
- • Return flights may be operated by codeshare partners with different limits
- • Duty-free purchases can add weight - plan accordingly
- • International flights may have stricter security screening for heavy bags
Common Questions About Weight Limits
Can I pay for a heavier bag in advance online?
No, Southwest does not offer the option to pre-pay for overweight baggage online. Overweight fees must be paid at the airport when you check in. This is because the actual weight must be verified by airport staff.
Is the weight limit 50 lbs or 50.0 lbs exactly?
Southwest allows a small grace margin. Bags weighing 50.5 lbs or less are typically accepted at the standard rate. However, at 51 lbs or above, you'll be charged the $100 overweight surcharge. Don't count on leniency - aim for 49 lbs to be safe.
Do free bags from A-List status get overweight fees waived?
No. A-List Preferred status gives you 2 free checked bags and A-List gives you 1 free bag, but this only waives the base baggage fee ($35/$45). Overweight surcharges still apply if your bag exceeds 50 lbs, even if the bag itself is "free."
Can I split one heavy bag into two lighter bags to save money?
Yes! This is often a cost-saving strategy. For example, if your 75 lb bag would cost $35 (first bag) + $200 (overweight) = $235, you could instead pay $35 (first bag) + $45 (second bag) = $80 by splitting it into two 37.5 lb bags.
What if my bag weighs exactly 70 lbs?
A bag weighing exactly 70 lbs falls into the 51-70 lb tier and incurs a $100 surcharge (plus base bag fee if applicable). At 71 lbs, it jumps to the $200 surcharge tier, so staying at 70 lbs can save you $100.
Are airport scales accurate?
Yes, airport scales are calibrated regularly and considered the official measurement. If you weighed your bag at home and it shows a different weight, the airport scale is what Southwest will use to assess fees. It's wise to leave a 2-3 lb buffer when packing.
Calculate Your Total Baggage Cost
Use our free calculator to determine your exact baggage fees based on weight, size, status, and number of bags. Get an instant estimate before you head to the airport.
Calculate My Fees →Related: Carry-on weight limit (none) · Baggage weight allowance · Overweight baggage fees · How to get free bags · All baggage fees · Carry-on guide
All information provided is for general informational purposes only and is based on publicly available data. Fee information was last verified against official Southwest baggage policy in March 2026. While we strive to keep the information accurate and up-to-date, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability, or availability of the information contained on this website.
Any reliance you place on such information is strictly at your own risk. In no event will the owner of this website be liable for any loss or damage including without limitation, indirect or consequential loss or damage, arising out of or in connection with the use of this website.