Whether it’s a last-minute United Airlines flight cancellation, a piece of luggage that fails to appear on the carousel, or a delayed refund, there are many reasons why passengers might need to reach the airline’s customer service team to get reassuring answers to their questions or solutions to their problems.
Various ways to contact United Airlines
By phone:
This remains the best option for making a quick booking or for handling high-pressure situations, such as a missed connection, the need to reschedule a trip on the same day, complex multi-airline itineraries, or requests for special assistance. A representative can modify a complicated booking in a single conversation. List of United Airlines customer service phone numbers in the United States, by language:
English: +(1) 800-864-8331 (24/7)
Spanish: 1-800-426-5561 (24/7)
Cantonese: 1-800-551-0943 (7 days a week, 8:00 AM – 6:00 PM)
Dutch: 1-800-225-8612 (Monday – Friday, 2:00 AM – 10:30 AM)
French: 1-800-537-3444 (7 days a week, 1:00 AM – 1:00 PM)
German: 1-800-537-2999 (7 days a week, 1:00 AM – 5:00 PM)
Hebrew: 1-800-225-8610 (Monday – Friday, 11:00 AM – 9:00 PM)
Italian: 1-800-537-8885 (7 days a week, 1:00 AM – 1:00 PM)
Japanese: 1-800-537-3366 (7 days a week, 8:00 AM – 9:00 PM)
Korean:1-800-825-2136 (Monday – Friday, 9:00 AM – 9:00 PM)
Mandarin: 1-800-551-3062 (7 days a week, 8:00 AM – 9:00 PM)
Portuguese: 1-800-323-5359 (7 days a week, 2:00 AM – 6:00 PM)
Online chat, the mobile app, and SMS
On united.com and within the mobile app, a chat window allows you to interact with a virtual assistant, and subsequently with a live agent, if necessary. This is the ideal channel for changing a seat, requesting documentation, or checking baggage policies, as it avoids phone wait times and provides a written record.
The app offers much more than just chat functionality: use it for check-in, accessing your boarding pass, tracking flights in real time, receiving gate-change notifications, and exploring rebooking options in the event of a flight disruption. During such disruptions (delays, cancellations, or overbooking), the app is often faster than visiting an airport service counter.
You can also reach United Airlines customer service via SMS by texting the following to 32050 (available 24/7):
“UNITED” for information regarding a reservation
“BAGS” for inquiries regarding baggage issues
“MILES” for inquiries about the MileagePlus program
Social media:
United is active on X (@United) and Facebook, with a team dedicated to handling messages. Private messages are preferable to public posts, as they allow you to share your booking reference securely. While the airline may respond faster via these channels than by phone during busy periods, this method is not suitable for urgent questions – such as those arising just hours before departure – or for highly complex issues.
Online contact form:
For detailed complaints, contested refund requests, sharing feedback (compliments), or requesting documents, the contact form on the website is the best tool. It creates a dated case file that you can reference later. Be factual: include dates, flight numbers, amounts, and attachments (receipts, photos, previous correspondence). A clear, specific request – including exact figures – is generally more likely to yield a helpful response than a long, angry account of the situation.
– United Refund Request Form.
– Form for filing a complaint or sharing a compliment.
Postal mail:
While slow, this method can be useful for prolonged disputes or compensation claims that go beyond a simple gesture of goodwill. Always keep a copy of everything you send.
Headquarters address: United Airlines, Inc., 233 South Wacker Drive,
Willis Tower, Chicago, IL 60606-7147, United States.
P.O. Box: United Airlines, Inc., P.O. Box 06649, Chicago, IL 60606, United States.
Address for refunds: United Airlines, United Refunds, P.O. Box 4607, Dept. NHCRF, Houston, TX 77253-3046, United States.