United Airlines complaints vary by route, airport, operating carrier, fare, disruption cause and travel date. The themes below appear in public reviews and complaint discussions, but they are individual reports and allegations. They do not establish that every passenger will have the same experience.
Flight Delays and Cancellations
Delay and cancellation complaints may involve changing departure times, missed connections, overnight stays, aircraft substitutions or different explanations from the app, gate display and airport employees. Possible causes include weather, air-traffic control, airport congestion, maintenance, crew availability and airline operations.
The reason matters because rebooking, hotel, meal, transportation and reimbursement outcomes may differ. Record the route, flight number, scheduled and actual times, stated cause, notifications and help offered. Save screenshots before information disappears from the app.
Rebooking and Missed Connections
When many flights are disrupted, replacement seats may be limited. Passengers may report an unusable itinerary, long customer-service line, delayed connection, separation from companions or a new flight departing days later.
Check the United app, airport Agent on Demand options, gate staff and reservations at 1-800-864-8331. Before buying a replacement ticket independently, ask whether United can endorse, rebook or authorize another option and obtain written documentation when possible.
Tarmac and Extended Ground Delays
A passenger may board and then remain on the aircraft because of weather, congestion, maintenance, a gate issue or another operational problem. Complaints can involve the length of the wait, cabin temperature, food, water, restroom access and communication.
Record the boarding, door-close, movement and deplaning times as accurately as possible. Keep announcements or messages and explain what assistance was offered. Safety and operational decisions can change quickly, so distinguish what the crew communicated from personal assumptions about the cause.
Refunds and Refund Denials
Refund complaints may involve a canceled or significantly changed flight, unused ticket, duplicate charge, service not provided, downgrade, baggage fee or voluntary cancellation of a restrictive fare. A future flight credit, travel certificate and refund to the original payment method are different outcomes.
Use United’s official refund form and save the request number. Eligibility depends on the ticket, reason, use and applicable consumer rules. The U.S. Department of Transportation refund guidance explains current federal requirements for eligible U.S. itineraries.
Future Flight Credits and Travel Certificates
Passengers may report difficulty locating a credit, understanding an expiration rule, applying it to another traveler or combining it with a new reservation. Different credit types can have different ownership and redemption restrictions.
Save the original ticket number, credit confirmation, issue date, value and written terms. Ask United to identify the exact credit type and explain any travel-by, book-by, passenger or combination rule.
Delayed, Lost or Damaged Baggage
Baggage complaints may involve a bag arriving late, being routed to another airport, sustaining damage or having contents missing. Report the problem at the airport or through United’s baggage tools as soon as possible.
Keep the baggage tag, boarding pass and file reference number. Photograph damage before repair, save delivery updates and retain itemized receipts for essential purchases. United’s Baggage Recovery Center is available at 1-800-335-2247, and passengers can text BAGS to 32050.
Baggage Reimbursement and Claim Deadlines
A delayed bag report is not always the same as a reimbursement or property claim. Passengers may need to submit receipts, an inventory, proof of value or additional forms within a stated period.
Read the claim instructions carefully and keep copies of everything submitted. Ask whether United needs original receipts, photographs, repair estimates or proof that a bag has been declared lost. Do not wait for tracing to finish if a separate written deadline applies.
Basic Economy Restrictions
Basic Economy complaints may concern seat assignment, boarding, baggage, changes, refunds, upgrades or loyalty benefits. The lowest displayed fare may have restrictions that differ by route and current policy.
Review the fare rules before purchase and compare the total cost after seats and bags. A review should identify that Basic Economy was purchased rather than describing all United fares as having the same limitations.
Seat Assignments, Equipment Changes and Downgrades
Passengers may report a changed seat, separated family, unavailable paid seat, aircraft substitution, broken seat feature or movement to a lower cabin. Operational changes can alter the seat map even when a seat was previously selected.
Save the original confirmation, seat receipt, boarding pass and revised assignment. Ask whether the paid seat service was delivered and whether a refund request or Customer Care claim is the correct route.
Upgrade and Premium-Cabin Complaints
Upgrade complaints may involve waitlist priority, an upgrade that did not clear, miles or copay, an aircraft change, unavailable premium seat or service that did not match expectations. Cabin labels and amenities vary by route and aircraft.
Identify whether the upgrade was confirmed, waitlisted, complimentary or purchased. Save the seat receipt, mileage transaction and aircraft-change notice. A service complaint after travel belongs with Customer Care, while a refund request may require the refund form.
MileagePlus Account, Miles and Award Travel
MileagePlus complaints may involve missing miles, account access, award pricing, partner credit, Premier qualification, upgrade instruments or a benefit that did not apply. Some transactions require the ticket number and operating-carrier receipt.
Contact the MileagePlus Service Center at 1-800-421-4655. Keep the MileagePlus number private while saving boarding passes, receipts, partner documentation and screenshots for support.
Accessibility and Wheelchair Assistance
Passengers may report delayed wheelchair assistance, damaged mobility devices, seating difficulties, service-animal questions or communication failures. United’s Accessibility Desk is available 24 hours a day at 1-800-228-2744.
Request assistance before travel when possible and keep the confirmation. If a disability-related issue occurs at the airport, ask for United’s Complaint Resolution Official. Document the airport, flight, time, requested accommodation and response without publishing private medical information.
Family Seating and Traveling With Children
Family complaints may involve seats separated after an aircraft change, stroller or car-seat handling, unaccompanied-minor procedures, boarding or a schedule change that affects the entire party.
Link all travelers to the same reservation when possible, review seats after every itinerary change and contact United promptly if a child is placed away from an accompanying adult. Keep the original and revised seat assignments.
Pet Travel and Service Animals
Travelers may encounter restrictions involving cabin pets, carrier dimensions, destination rules, documentation or service animals. Policies can differ between ordinary pets, trained service animals and emotional-support animals.
Verify the current policy for the operating carrier and destination before travel. United directs service-animal questions to its Accessibility Desk. Avoid publishing medical or disability documentation in a review.
Airport Service, United Club and Onboard Experience
Reviews may address gate communication, boarding, lounge crowding, food, cleanliness, Wi-Fi, entertainment, cabin maintenance or employee interactions. These experiences can vary significantly by airport, aircraft and travel date.
A detailed review identifies the flight, airport, cabin or lounge, paid service and requested resolution. A fee refund may use a different route from a general service complaint.
United Express and Partner-Airline Confusion
Some United-branded itineraries are operated by a regional or international partner. Complaints may arise when the aircraft, seat, baggage rule, service or support channel differs from what the passenger expected.
Check the “operated by” language on every segment. Identify which carrier handled the event and which company issued the ticket before submitting duplicate complaints.
Third-Party Booking Problems
A passenger who booked through a travel agency, online travel site, credit-card portal, cruise company or another airline may be directed back to the seller for certain changes or refunds. This can lead to each company referring the traveler to the other.
Save both companies’ confirmation and ticket numbers, identify who charged the payment method and ask each party to state in writing what it controls. A United flight number alone does not establish that United issued the ticket.
Customer Care Response and Complaint Follow-Up
Some reviewers report a form response, lengthy wait or decision that does not address every requested expense. Others praise a prompt reply or meaningful resolution.
Use the official Customer Care form after travel, present a short timeline and separate each request. Include the ticket, flight, receipts and earlier case numbers. Ask for a written explanation if United denies all or part of the request.
Protect Your Travel, Identity and Account Information
Never publish your confirmation code, ticket number, full passenger name, MileagePlus number, password, one-time code, payment information, passport number, Known Traveler Number, date of birth, address, telephone number, medical information, disability documentation or photographs of unredacted travel documents. Use United.com, the United app or a verified official number for private records. Zero Stars cannot access a reservation, rebook a flight, trace baggage, issue a refund or decide a claim.