United Airlines customer service phone numbers

United Airlines operates separate phone lines depending on what you need. The main reservations line is 1-800-864-8331, which handles new bookings, changes to existing reservations, and general questions about flights and fares. This number works from the United States and Canada.

If you have already booked a ticket and need to modify it — change your flight date, add a seat selection, or request a refund — you can also use the reservations line. Wait times vary by time of day and season, with mornings and weekdays typically shorter than evenings and weekends.

For frequent flyer account questions, baggage claims, or special services like wheelchair information or unaccompanied minor travel, United maintains separate departments. The reservations line can transfer you, or you can ask for the specific department when you call.

Key Takeaways

  • United's main reservations number is 1-800-864-8331 for booking flights, making changes, or asking about fares.
  • Have your confirmation number or ticket number ready before you call, which speeds up the process.
  • Call early in the morning or on weekdays to reach someone faster than during peak evening hours.
  • United's website and mobile app can handle many changes without a phone call, including seat selection and flight changes.
  • International callers can find country-specific numbers on United's website under "Contact Us."

What information to have before you call

Gathering a few details before dialing saves time and helps the agent locate your reservation quickly. Have your confirmation number ready — this is the six-character code United sent you by email when you booked. If you do not have the confirmation number, your last name and the phone number or email address used for the booking will work instead.

If you are calling about an existing reservation, also have the flight date and departure city available. For baggage claims or lost item reports, have your baggage tag number if possible, though the agent can look it up by flight information. For frequent flyer questions, your MileagePlus account number speeds things up.

When to call versus using the website or app

United's website and mobile app handle many tasks without a phone call. You can view your reservation, change your flight to another date or time on the same route, select or change seats, add baggage, and request a refund or travel credit — all without speaking to anyone. The app is often faster than the website for these routine changes.

Call the reservations line when you need to change to a different destination, add a companion ticket, request a refund for a non-refundable fare, or discuss special circumstances like a death in the family or medical emergency. You should also call if the website shows an error, if you need to book a complex itinerary with multiple airlines, or if you want to discuss fare options before booking.

What to expect during the call

When you reach the reservations line, an automated system will ask you to state what you need — "I want to make a reservation," "I need to change my flight," or "I have a question about my booking." Speaking clearly helps the system route you correctly. You may be asked to enter your confirmation number using your phone keypad.

Wait times range from a few minutes to over an hour depending on call volume. United does not offer callback options on the main reservations line, so you will hold until an agent picks up. If you reach an agent and they cannot help with your specific issue, they will transfer you to the right department rather than disconnecting you.

Alternatives to calling

United's website at united.com has a "Contact Us" page with options beyond phone support. You can start a chat with an agent during business hours, send a message through your MileagePlus account, or look up answers to common questions in their help section. Chat often has shorter wait times than phone lines during busy periods.

If you are at the airport, visit a United ticket counter or call the airport directly and ask to be transferred to the United customer service desk. Airport agents can sometimes resolve issues faster than the phone line, especially for same-day flight changes or urgent problems.

International phone numbers and calling from abroad

If you are calling from outside the United States or Canada, United maintains phone lines in most countries where it operates flights. These numbers are listed on the "Contact Us" section of United's website — search for your country to find the local number. Calling a local number is usually cheaper than calling the US number from overseas.

International calls to the US number 1-800-864-8331 will not work from most countries because 800 numbers are toll-free only within North America. Check United's website for your region's number before attempting to call.

Frequently Asked Questions

How long will I wait on hold?

Wait times vary widely — anywhere from five minutes to over an hour — depending on the time of day, day of the week, and travel season. Early morning calls on weekdays typically have shorter waits. If you are calling during a major holiday or travel surge, expect longer hold times.

Can I book a flight over the phone?

Yes, you can book a flight by calling 1-800-864-8331. An agent will ask about your travel dates, destinations, and preferences, then quote you fares and hold a reservation while you decide. Booking online or through the app is usually faster, but calling works if you need help choosing flights or have questions about fares.

What if I need to change my flight to a completely different date or destination?

You will need to call the reservations line for major changes like switching your destination or flying on a different day than originally booked. The website can only change you to another flight on the same route. An agent can explore your options and explain any fare differences or fees that explore.

Is there a fee for calling customer service?

No, calling United's toll-free reservations line is free within the United States and Canada. You pay only for your phone service. International callers may incur long-distance charges depending on their phone plan.

What if the automated system does not understand what I say?

Say "agent" or "representative" clearly, or stay silent when the system prompts you — most systems will transfer you to a person if you do not respond to the automated menu. You can also press zero on your phone keypad, though not all systems recognize this.