United Airlines Baggage Fees

United Airlines baggage fees are not simple. They change based on your fare type, destination, loyalty status, the credit card you used to book, and whether you pay in advance or at the airport. A domestic round trip with two checked bags for two passengers can cost anywhere from $0 to $200 depending entirely on those variables. The single most important habit: check the baggage section of your specific booking confirmation before you pack — that number is your actual fee, not anything you read online. Here is what every traveler needs to know before heading to the airport.

• 1
  What is United Airlines charging for a first checked bag on domestic flights right now? $35 if you prepay online at least 24 hours before the flight. $40 if you pay at the airport counter. Save $5 per bag per direction by paying in advance.

  For standard Economy passengers on domestic U.S. routes (including Canada, Mexico, and the Caribbean), the first checked bag costs $35 when prepaid online and $40 at the airport. The second checked bag is $45 prepaid or $50 at the airport. These rates apply per bag, per direction — meaning a round trip with one bag costs $70–$80, and two bags run $160–$200 for a couple on a round trip. Prepaying through the United app or website at least 24 hours before departure is the easiest way to save $5 per bag each way. Always use United’s official Checked Bag Fee Calculator at united.com for your exact itinerary, since international routes vary significantly.
• 2
  What are the size and weight limits for a standard checked bag? Maximum 62 total linear inches (length + width + height) and 50 pounds. Bags exceeding either limit trigger additional overweight or oversize fees on top of the standard rate.

  A standard checked bag must measure no more than 62 total linear inches (158 cm) combined and weigh no more than 50 pounds (23 kg). If your bag weighs 51–70 pounds, United charges an overweight fee of $100–$200 on top of the standard bag fee. Bags weighing 71–100 pounds trigger a fee of $200–$400 and require advance notice by phone. United does not accept any checked bag over 100 pounds or 115 total linear inches (except assistive devices and musical instruments). If a single bag is both overweight and oversized, both fees are applied cumulatively. Invest in a simple handheld luggage scale before you pack — many are under $15 and can save you $100 at the check-in counter.
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  Can Basic Economy passengers bring a carry-on bag? No — not on most domestic and short-haul international routes. Basic Economy allows only one personal item (maximum 17 x 10 x 9 inches). A full-size carry-on costs the standard checked bag fee plus a $25 gate handling fee if you arrive at the gate with one.

  Basic Economy is United’s most restricted fare tier. On domestic U.S. flights and routes to Canada, Mexico, and the Caribbean, Basic Economy passengers are limited to one personal item that fits under the seat in front of them — no full-size carry-on in the overhead bin. If you arrive at the gate with a full-size carry-on, United will charge you the standard checked bag fee ($35–$40) plus a $25 gate handling surcharge. The important exception: Basic Economy passengers on trans-Atlantic, trans-Pacific, and South American flights are still permitted one free full-size carry-on, per AeroXplorer’s February 2026 guide. United MileagePlus Premier members, Star Alliance Gold members, and eligible United credit card holders are also exempt from this restriction even on Basic Economy domestic tickets.
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  What is the carry-on bag size limit for standard Economy passengers? 9 x 14 x 22 inches (23 x 35 x 56 cm) including wheels and handles. Plus one free personal item under the seat: 9 x 10 x 17 inches maximum.

  For most passengers except Basic Economy on domestic routes, United allows one carry-on bag in the overhead bin (up to 9 x 14 x 22 inches) plus one personal item under the seat in front of you (up to 9 x 10 x 17 inches) at no charge. Both measurements include wheels, handles, and external pockets. United does enforce size limits when flights are full or bins are crowded — the “they never measure bags” assumption can result in an unexpected gate check. If your carry-on does not fit in the overhead bin, United will check it to your final destination and may charge the applicable checked bag fee depending on your fare. For Basic Economy passengers on international long-haul routes, this carry-on is also permitted for free.
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  How can I get free checked bags on United without having elite status? Use a qualifying United MileagePlus credit card to purchase your ticket. The United Explorer Card provides the first bag free for you and one companion on the same reservation. The United Quest and United Club Infinite cards give the first and second bags free.

  The United Explorer Card (annual fee: $0 first year, then $150) provides one free checked bag for the primary cardholder and a companion on the same reservation — but only on United-operated flights, and only if you purchased the ticket with the card and your MileagePlus number is on the reservation. NerdWallet notes that a couple who each check one bag per round trip saves $140 annually, easily covering the card’s $150 fee in one trip. The United Quest Card and United Club Infinite Card extend the benefit to the first and second checked bags free. Critical rule: the card benefit does not stack with elite status, and it does not apply to flights operated by partner airlines even if booked through United.com. Confirm your booking shows $0 for baggage before departing.
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  What baggage benefits do MileagePlus Premier members receive? Premier Silver: 1 free checked bag (up to 70 lbs). Premier Gold: 2 free bags. Premier Platinum and 1K: 3 free bags. All Premier members may extend these benefits to up to nine travel companions on the same reservation.

  United’s MileagePlus Premier status tiers each provide a higher weight limit than standard Economy: Premier members get 70 pounds per bag instead of the standard 50 pounds. Premier Silver also benefits traveling companions — up to nine people on the same reservation share the same free bag allowance. The Points Guy confirms these benefits apply on United and United Express flights for U.S. domestic routes, Canada, Mexico, the Caribbean, and Central America. Star Alliance Gold members (from partner airlines like Lufthansa, Air Canada, or Singapore Airlines) also receive at least one free first checked bag on United-operated flights. Note: the weight limit upgrade to 70 pounds applies per Elite rules but does not mean overweight fees are waived beyond 70 pounds; the 71–100 pound fee still applies above 70 pounds for Elite members.
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  Are international flights more expensive for checked bags than domestic? It depends heavily on the route. Many long-haul international routes to Europe, Asia, and South America include at least one free checked bag in Economy. But fees for routes where bags are not free can reach $75 or more per bag each way.

  United’s international baggage policy is route-specific and often more generous than domestic. Passengers flying Economy to most of Europe, Asia, South America, and many other international destinations typically receive one free checked bag. However, short-haul international routes to the Caribbean, Canada, and Mexico follow domestic fee rules. Basic Economy passengers on international routes may face different charges than standard Economy. Because international fees vary so significantly by exact origin and destination, AeroXplorer’s 2026 guide strongly recommends using United’s official Baggage Fee Calculator at united.com for every international trip — the rule for a flight to London may be completely different from a flight to Cancun even if both are labeled “international.”
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  What are my rights if United loses or significantly delays my checked bag? Under U.S. DOT rules, you are entitled to an automatic baggage fee refund if your bag is more than 12 hours late on a domestic flight. If your bag is lost, United must compensate you up to $4,700 per passenger for domestic flights.

  The U.S. Department of Transportation (DOT) mandates automatic baggage fee refunds when a bag is significantly delayed: more than 12 hours late on domestic flights, more than 15 hours on international flights under 12 hours long, and more than 30 hours on international flights over 12 hours. These refunds must be issued within 7 business days (credit card) or 20 calendar days (other payment). United also reimburses reasonable essential purchases (clothing, toiletries) while you wait — save all receipts. If a bag is not found after approximately 21 days, United considers it lost and must compensate up to $4,700 per passenger for domestic travel (DOT maximum liability) or the equivalent in Special Drawing Rights under the Montreal Convention for international travel. Report delayed bags immediately at the airport or online — domestic claims must be filed within 45 days, international within 21 days.
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  What items does United allow for free regardless of fare type? Wheelchairs, canes, crutches, and other mobility devices are always free and do not count against any baggage allowance. Child car seats, strollers (one per child), and diaper bags are also free.

  United is required by federal regulation to accommodate assistive devices at no charge, and mobility equipment — including manual and electric wheelchairs, walkers, canes, crutches, and prosthetic devices — does not count against your baggage allowance regardless of fare class. Families traveling with children receive additional free allowances: one stroller and one car seat per child check for free, either at the counter or at the gate. Diaper bags and breast pumps are also permitted without charge. Critically, for passengers with wheelchairs or other mobility equipment, DOT regulations impose no cap on airline liability if these items are damaged or lost — the standard $4,700 domestic limit does not apply. This is an important protection for older travelers and anyone relying on mobility aids.
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  Is United’s annual baggage subscription worth buying? United offers a baggage subscription starting at $349 per year, covering the subscriber and up to eight companions. The top tier at $999 covers two free bags per person on any United flight worldwide. It is rarely better than a United credit card unless you fly United frequently without one.

  The United annual baggage subscription allows you to prepay for checked bag access across multiple flights for a flat yearly rate. The $349 base tier covers one bag per reservation for domestic routes; the $999 tier covers two bags per person for any United-operated flight globally, including companions on the same reservation. To break even on the $349 plan at $35/bag each way, you need to check at least 5 bags per year (equivalent to 5 one-way trips or 3 round trips with a bag). However, the United Explorer Card at $150/year provides the same first-bag-free benefit without the subscription cost — making the credit card the better option for most travelers. The subscription makes more sense for someone who travels alone frequently, cannot get a credit card, or already has a companion who travels separately and would not be covered by the card benefit.

Sources: United.com official baggage pages Mar 2026 ($35 prepay / $40 airport domestic first bag; $45/$50 second bag; carry-on 9x14x22 in; personal item 9x10x17 in; assistive devices free; stroller/car seat free per child; Basic Economy one personal item only; $25 gate fee for carry-on); AeroXplorer Feb 26 2026 (Basic Economy long-haul carry-on exception; gate fee + checked bag fee; United baggage calculator recommendation); BaggagePolicies.com Dec 2025 updated 2026 (first bag $35/$40; second bag $45/$50; overweight 51-70lb $100-200; 71-100lb $200-400; 115 in/100 lb max; Premier Silver 1 bag/70 lb; Gold 2 bags; Platinum/1K 3 bags; subscription $349 start); The Points Guy baggage guide (Premier Silver/Gold/Platinum/1K free bags; up to 9 companions; Star Alliance Gold 1 free bag; subscription $349-$999); NerdWallet Nov 2025 (Explorer Card $0 first yr then $150; first bag free cardholder + companion same reservation; card must pay for ticket); Chase.com Explorer and Quest card pages (MileagePlus number required; purchase with card required; Quest: first and second bags free); DOT transportation.gov (12 hr domestic delayed refund; 15/30 hr international; $4,700 domestic max liability; Montreal Convention international; wheelchairs no cap); AirAdvisor (21-day lost determination; $4,700 domestic; Montreal Convention SDRs international); Erika.com / NerdWallet delayed baggage (12 hr domestic; 15/30 hr international; 7 business days / 20 calendar days refund; essential expense receipts required; domestic 45-day claim; international 21-day claim)

All fees below are for domestic U.S. routes (including Canada, Mexico, Caribbean) in standard Economy. International long-haul and premium cabin fees differ. Always verify at united.com before your trip.

Sources: United.com baggage pages Mar 2026; BaggagePolicies.com Dec 2025 / updated 2026; AeroXplorer Feb 26 2026; LugLess.com updated Feb 17 2026; DOT transportation.gov (mobility device rules; no liability cap for wheelchairs)

Sources: Chase.com Explorer card and Quest card benefit pages (card must pay for ticket; MileagePlus number required; United-operated flights only; 1 companion); The Points Guy (Premier Silver/Gold/Platinum/1K free bags; up to 9 companions; Star Alliance Gold 1 bag); BaggagePolicies.com 2026 (United First/Business 2 bags 70 lbs); Frugal Flyer Jun 2025 (military: 3 personal / 5 business; dependents); PointsCrowd Jan 2026 (card benefit award tickets: pay taxes with card required); FlyerTalk (benefits do not stack; best single allowance applies)

Sources: United.com baggage policy (domestic first bag $35 prepay; $25 gate fee Basic Economy); DOT transportation.gov ($4,700 domestic max liability; mobility devices exempt from cap); BaggagePolicies.com 2026 (overweight 51-70 lbs $100-200)

Answer three questions to get an instant estimate. For guaranteed accuracy on your specific route, always confirm at united.com — especially for international flights.

Sources: U.S. DOT transportation.gov lost/delayed/damaged baggage page (12 hr domestic; 15/30 hr international; $4,700 domestic cap; Montreal Convention SDRs; mobility device no cap; 7 business days / 20 calendar days refund); NerdWallet delayed baggage compensation guide (DOT automatic refund trigger; 7 business days credit card; 20 days other); AirAdvisor / Matador Network (United 21-day search; $1,500 per bag without receipts; 45-day domestic claim; 21-day international claim; $4,700 DOT cap); Erika.com (United $4,700 domestic; 15/30 hr international triggers; keep receipts; essential expenses no daily limit per DOT; Chase Sapphire Preferred $3,000 lost / $100/day 5 days delayed)

Sources: United.com medical/accessibility pages (CPAP/POC as medical devices; Medical Desk 1-800-228-2744; mobility devices free); TSA.gov (medically necessary liquids exempt from 3-4 oz rule; declaration at checkpoint; prescription label not required); The Points Guy / BaggagePolicies.com (involuntary vs voluntary gate check; Basic Economy $25 + bag fee; no fee involuntary); TSA.gov (TSA-approved lock requirement; agent authority to cut non-TSA locks); AirAdvisor (PIR filing; 24-hr bag location typical; 5-day pickup window; 8-hr residential delivery by 11 PM); LugLess.com updated Feb 17 2026 (luggage shipping $30-60 per bag; 50-70 lb capacity; door-to-door)

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