United Airlines vs American Airlines: Carry-On Policy Comparison
Side-by-side comparison of cabin bag size limits, weight allowances, personal item rules, and baggage fees.
Strictest overall
United Airlines
United Airlines has more restrictive cabin bag limits based on total linear dimensions.
| Policy | United Airlines | American Airlines | Strictest |
|---|---|---|---|
| Cabin bag size | 56×35×22 cm | 56×36×23 cm | United Airlines |
| Cabin bag weight | No limit | No limit | Tied |
| Cabin bags allowed | 1 | 1 | Tied |
| Personal item | Included | Included | Tied |
| Personal item size | 43×25×22 cm | 43×33×18 cm | United Airlines |
| Enforcement | lenient | lenient | Tied |
| Overweight fee (online) | — | — | — |
| Oversize fee (online) | — | — | — |
Check your bag on United Airlines →Check your bag on American Airlines →Full United Airlines policy →Full American Airlines policy →
Frequently asked questions
Which is stricter — United Airlines or American Airlines?▾
United Airlines has stricter carry-on size limits overall based on the total linear dimensions of the allowed bag.
What is the carry-on size limit for United Airlines?▾
United Airlines allows a carry-on bag of 56×35×22 cm in economy class.
What is the carry-on size limit for American Airlines?▾
American Airlines allows a carry-on bag of 56×36×23 cm in economy class.
Does United Airlines allow a personal item?▾
Yes, United Airlines allows one personal item (underseat bag) in addition to the main cabin bag.
Find the Right Bag
Not sure which carry-on bag fits both airlines? We've reviewed the best options.
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Open compare tool →Rules can change. Always verify with your airline before flying.