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United Airlines·Star Alliance
United carry-on size limits, checked bag fees, weight limits, overweight and oversize charges, and who gets bags free. Updated policy summary with booking help.
Key Travel Facts & Insights
One personal item that fits under the seat, included on every fare including Basic Economy.
One full-size carry-on included on United Economy and above. Basic Economy does NOT include a carry-on on domestic and short-haul international routes — check this before you book, because the gate charge is materially higher than pre-paying. Maximum dimensions: 22 x 14 x 9 inches including wheels and handles.
$40 at the airport, $35 if pre-paid online at least 24 hours before departure on standard domestic tickets.
$50 at the airport, $45 pre-paid online on standard domestic tickets.
50 lbs (23 kg) in economy; 70 lbs (32 kg) in Premium Plus, First, Business and Polaris.
Bags 51–70 lbs and 71–100 lbs carry escalating charges. Above 100 lbs United will not accept the bag as checked baggage.
Above 62 linear inches triggers an oversize charge, which stacks with any overweight charge on the same bag.
First bag free for United Explorer and higher MileagePlus credit cardholders and one companion, for Premier Silver and above, for active-duty US military, and in Premium Plus, First, Business and Polaris.
Skis, snowboards and golf bags count as one standard checked bag. Bicycles are accepted within standard size and weight limits.
22 x 14 x 9 inches including wheels and handles including wheels and handles. One full-size carry-on included on United Economy and above. Basic Economy does NOT include a carry-on on domestic and short-haul international routes — check this before you book, because the gate charge is materially higher than pre-paying.
$40 at the airport, $35 if pre-paid online at least 24 hours before departure on standard domestic tickets. A second bag: $50 at the airport, $45 pre-paid online on standard domestic tickets.
50 lbs (23 kg) in economy; 70 lbs (32 kg) in Premium Plus, First, Business and Polaris. Bags 51–70 lbs and 71–100 lbs carry escalating charges. Above 100 lbs United will not accept the bag as checked baggage.
First bag free for United Explorer and higher MileagePlus credit cardholders and one companion, for Premier Silver and above, for active-duty US military, and in Premium Plus, First, Business and Polaris.
Fare rules, baggage allowances and change policies differ by route and fare brand. Our consultants confirm the exact terms attached to your itinerary before you pay — and handle the change or refund if plans move.