Carry-on size rules aren’t the same across airlines and that’s where most travelers get caught off guard. This website brings together airline carry-on size limits, cabin baggage dimensions, and weight rules in one place so you can compare quickly and pack with confidence.
Carry-On Size Comparison by Airline
Use this table to compare carry-on luggage size across major airlines. These are the actual permitted dimensions used at the gate.
| Airline | Carry-On Size (cm) | Carry-On Size (inches) | Weight Limit | Allowance |
|---|---|---|---|---|
| American Airlines | 56 x 36 x 23 | 22 x 14 x 9 | Not specified | 1 bag |
| Delta Airlines | 56 x 35 x 23 | 22 x 14 x 9 | Not specified | 1 bag |
| Southwest Airlines | 61 x 41 x 25 | 24 x 16 x 10 | Not specified | 1 bag |
| United Airlines | 56 x 35 x 23 | 22 x 14 x 9 | Not specified | 1 bag |
| Frontier Airlines | 61 x 41 x 25 | 24 x 16 x 10 | 15.8 kg (35 lb) | 1 bag (paid) |
| JetBlue Airlines | 55.88 x 35.56 x 22.86 | 22 x 14 x 9 | Not specified | 1 bag |
| Spirit Airlines | 56 x 46 x 25 | 22 x 18 x 10 | Not specified | 1 bag (fare-based) |
| Alaska Airlines | 56 x 36 x 23 | 22 x 14 x 9 | Not specified | 1 bag |
| Allegiant Airlines | 55 x 40 x 25 | 22 x 16 x 10 | Not specified | 1 bag (paid) |
| Air Canada | 55 x 40 x 23 | 21.5 x 15.5 x 9 | Not specified | 1 bag |
| British Airways | 56 x 45 x 25 | 22 x 18 x 10 | Not specified | 1 bag |
| Lufthansa | 55 x 40 x 23 cm | 21.6 x 15.7 x 9 in | 8 kg | 1–2 bags (depends on class) |
Data verified from official airline baggage policies
Carry-On Size by Airline
Each airline sets its own baggage rules, and even small differences in permitted size can affect whether your bag is accepted onboard.
Every airline has its own baggage allowance, and even small differences in size restrictions can affect whether your bag is accepted.
Carry-On Baggage Size & Weight Rules
If you’re not sure how carry-on rules work across airlines, start here. These guides explain how baggage allowance, size restrictions, and weight limits are applied in real situations.
U.S. airlines often don’t enforce weight, but international airlines usually do
Compare Carry-On Size Limits
When choosing between airlines, direct comparison matters. A bag that works on one airline may not meet another airline’s size limit.
Choosing the right airline can mean the difference between carrying your bag onboard or checking it last minute.
About Author
Lindsey LaGrange is an aviation professional with hands-on experience in airport baggage operations, including bag room coordination and dispatch. She provides practical insights into carry-on size rules, baggage handling, and how airline policies are applied at the airport.
Frequently Asked Questions
How We Verify Carry-On Rules?
All carry-on size data, luggage dimensions, and baggage allowance details on this site are sourced directly from official airline policy pages. We review and update this information regularly to reflect the latest airline rules.
Our goal is simple: