Southwest Airlines Carry-On Size & Rules (2026)
Planning to fly with Southwest Airlines (WN) and wondering what you can bring on board? This comprehensive guide covers everything about Southwest Airlines carry-on baggage rules including exact size dimensions, weight restrictions, personal item policies, and what additional items you can bring free of charge. All information is verified against Southwest Airlines's official policies and updated regularly.
Quick Answer
Southwest Airlines carry-on size limit: 24 x 16 x 10 inches (61 x 41 x 25 cm). Carry-on is free for all fares. Personal item: Must fit under the seat in front of you (always free).
Size Limits at a Glance
| Bag Type | Size (inches) | Size (cm) | Fee |
|---|---|---|---|
| Carry-On Bag | 24 x 16 x 10 | 61 x 41 x 25 | Free |
| Personal Item | Must fit under seat | — | Free |
Weight Limit
No weight limit for carry-on or personal item
Carry-On Fee Details
Free for all fares
Overhead bin access: All passengers get full overhead bin access. No fare restrictions.
Personal Item Rules
Size: Must fit under the seat in front of you. Examples: Purse, briefcase, backpack, laptop bag (must fit under the seat in front of you)
Additional Items Allowed (Free)
- Coat or jacket
- Umbrella
- Food and beverages
- Reading material
- Assistive devices
- Child car seat (if child has ticket)
How Strictly Are Rules Enforced?
Southwest does not publish specific personal item dimensions — the item must fit under the seat in front of you.
Expert Tips
- Southwest carry-on dimensions are 24 x 16 x 10 inches (including handles and wheels)
- No weight limit for carry-on or personal item
- Personal item has no published dimensions — must fit under the seat in front of you
- All fares include both a carry-on bag and a personal item at no charge
Carry-On Packing Checklist
Before heading to the airport, ensure your carry-on meets Southwest Airlines's requirements:
- Measure your bag: must be within 24 x 16 x 10 inches including handles and wheels
- Weigh your bag: No weight limit for carry-on or personal item
- Personal item fits under the seat
- Liquids in 3-1-1 compliant bag (containers 100ml or less, one quart-size clear bag)
- Electronics accessible for security screening
- No prohibited items (sharp objects, large liquids, flammable materials)
Frequently Asked Questions
- What size carry-on does Southwest Airlines allow?
- Southwest Airlines allows a carry-on bag up to 24 x 16 x 10 inches (61 x 41 x 25 cm).
- Is carry-on free on Southwest Airlines?
- Free for all fares
- What is Southwest Airlines's personal item size?
- Must fit under the seat in front of you. Examples: Purse, briefcase, backpack, laptop bag (must fit under the seat in front of you)
- Does Southwest Airlines weigh carry-on bags?
- No weight limit for carry-on or personal item