Verdict
United allows a free carry-on up to 22 x 14 x 9 inches including wheels and handles — but not on Basic Economy, where you get a personal item only and a full-size bag is checked at the gate for a fee. The personal item limit is 17 x 10 x 9 inches, the narrowest of the big four. Checked bags cost $45 prepaid or $50 at the airport for the first, and $55 or $60 for the second, each way, following the April 3, 2026 increase. A third bag is $200.
Comparing carriers? Compare airline carry-on limits, then measure the whole suitcase before checking your flight requirements.
Key Facts for Fast Answers
If you fly United Basic Economy, pack to the personal item, not the carry-on. Budget roughly 17 x 10 x 9 inches and check whether the fare upgrade costs less than the gate fee.
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If you fly United Basic Economy, pack to the personal item, not the carry-on. Budget roughly 17 x 10 x 9 inches and check whether the fare upgrade costs less than the gate fee.
Full Analysis
On most United domestic Basic Economy fares you get a personal item only. Bring a full-size carry-on to the gate and it gets checked with the standard bag fee plus a gate handling charge — commonly $50 at the lobby and $75 at the gate.
United cabin baggage limits
| Bag type | Limit | Cost |
|---|---|---|
| Carry-on | 22 x 14 x 9 in (56 x 36 x 23 cm), including wheels and handles | Free on standard Economy |
| Personal item | 17 x 10 x 9 in | Free on every fare |
The 17 x 10 x 9 personal item is the tightest of the major US carriers. American allows 18 x 14 x 8 and Delta enforces a "fits under the seat" standard with no printed number. If you carry a structured laptop bag, measure it against United specifically.
United checked bag fees (2026)
| Bag | Prepaid 24h+ | At the airport |
|---|---|---|
| 1st checked bag | $45 | $50 |
| 2nd checked bag | $55 | $60 |
| 3rd checked bag | $200 | $200 |
These rates apply to tickets purchased on or after April 3, 2026 for domestic flights and short routes to Canada, Mexico, the Caribbean, and Latin America. International routes changed on later dates. Fees are per direction, so a round trip doubles every number in the table.
Size and weight limits
- Checked bag maximum: 30 x 20 x 12 inches, or 62 linear inches total, including handles and wheels.
- Economy and premium economy: 50 lb per bag.
- United Business, First, and Polaris: 70 lb per bag.
- MileagePlus Premier Silver and above, plus Star Alliance Gold: 70 lb per bag.
Who checks bags free on United
- Premier Silver: one free bag. Gold, Platinum, and 1K: up to three.
- United Explorer and select co-branded cardholders: first bag free for the cardholder and companions on the same reservation.
- Active-duty military on orders: up to five bags free, with weight limits up to 100 lb.
- Premium cabin tickets include bags at the 70 lb allowance.
Why United enforcement feels stricter in 2026
United has rolled out automated bag-sizer scanners at more than 35 airports, and Delta and American are piloting comparable systems. The practical effect is that oversized carry-ons are now caught by a machine rather than a gate agent making a judgment call. A bag that passed for years can start costing money on the same route.
The Problem
Two things cost United passengers money. The first is Basic Economy, which removes the free carry-on that most travelers assume they have. The second is the personal item: at 17 x 10 x 9 inches it is narrower than American and Delta allow, so a laptop bag that sails through at other airlines can be flagged at United.
Options
Free up to 22 x 14 x 9 in on standard Economy — not included on Basic Economy.
Free on every fare, including Basic Economy. Limited to 17 x 10 x 9 in.
$45 if prepaid at least 24 hours out, $50 at the airport.
$55 and $60 respectively — or $45 and $55 if prepaid.
Scenario Recommendations
- If you fly United Basic Economy, pack to the personal item, not the carry-on. Budget roughly 17 x 10 x 9 inches and check whether the fare upgrade costs less than the gate fee.
- Prepay at least 24 hours before departure. United gives $5 per bag for online payment in advance, and the airport price is the highest one.
- Buy a carry-on at 22 x 14 x 9 or slightly under. United has installed automated bag sizers at more than 35 airports, so a bag that used to pass on the honor system can now be flagged automatically.
Carry-on size & airline rules
Your next luggage decision
Find the size and weight questions to check before your flight.
Include wheels, handles, pockets and expanded depth.
Go directly to the rules for the airline you are flying.
Match a suitcase to your route and packing needs.
FAQ
What is the United carry-on size limit?
22 x 14 x 9 inches including handles and wheels. One carry-on is free on standard Economy fares, but Basic Economy on most domestic routes includes a personal item only.
What is the United personal item size?
17 x 10 x 9 inches. That is narrower than American (18 x 14 x 8) and stricter than Delta, which publishes no dimension beyond "fits under the seat."
How much is a checked bag on United in 2026?
$45 for the first bag and $55 for the second when prepaid at least 24 hours before departure, or $50 and $60 when paid at the airport. A third bag is $200. Fees rose $10 each on April 3, 2026.
Does United Basic Economy include a carry-on?
On most domestic flights, no. Basic Economy includes a personal item only. If you bring a full-size carry-on to the gate it is checked and charged, typically $50 at the lobby or $75 at the gate.
What is the United overweight bag fee?
United charges overweight fees by weight band on top of the standard bag fee. The heaviest bands reach $200 per bag. Bags over 100 lb are generally not accepted.
What is the United checked bag weight limit?
50 lb in economy and premium economy. Business, First, and Polaris allow 70 lb, as do Premier Silver and above and Star Alliance Gold members.
Does United give a discount for prepaying baggage?
Yes. Paying online at least 24 hours before departure saves $5 per bag on the first and second checked bags.
Do United credit card holders get free checked bags?
Yes. United Explorer and several co-branded cards waive the first checked bag fee for the cardholder and companions traveling on the same reservation on domestic itineraries.
Final Recommendation
United allows a free carry-on up to 22 x 14 x 9 inches including wheels and handles — but not on Basic Economy, where you get a personal item only and a full-size bag is checked at the gate for a fee. The personal item limit is 17 x 10 x 9 inches, the narrowest of the big four. Checked bags cost $45 prepaid or $50 at the airport for the first, and $55 or $60 for the second, each way, following the April 3, 2026 increase. A third bag is $200.
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