United Airlines reservation phone number and when to call

United Airlines' main reservation line is 1-800-864-8331. This number works for new bookings, changes to existing reservations, and questions about your ticket. The line is open from early morning until late evening, seven days a week, though wait times vary by time of day and season.

Call this number if you need to book a flight, modify dates or times on a reservation you already have, add a seat selection, purchase baggage allowance, or ask about fare rules before you book. The system will route you through an automated menu first, then to a representative if you need one.

If you are calling from outside the United States, the number changes by country. From Canada, call 1-800-538-2929. From the UK, call 0844-800-0150. From other countries, visit United's website and search for your country's phone number, as rates and routing differ.

Key Takeaways

  • United's main reservation number is 1-800-864-8331, available seven days a week from early morning to late evening.
  • Wait times are usually shorter in early morning hours and on weekdays rather than evenings or weekends.
  • You can book new flights, change existing reservations, and ask about fares on this same line without being transferred.
  • International callers need a different number based on their country; check United's website for the correct one.
  • Having your confirmation number or ticket number ready before you call speeds up the process.

What information to have ready before calling

Gather these details before you dial so the representative can help you faster. If you are booking a new flight, have your departure and arrival cities, travel dates, and number of passengers ready. If you are changing an existing reservation, have your confirmation number (a six-character code United sent you by email) or your ticket number.

Have a credit card available if you are paying for a new booking or paying a change fee. If you are calling about a specific fare or promotion you saw, have the website link or offer code so the representative can see exactly what you are asking about. This prevents confusion when the representative pulls up a different price.

Why wait times vary and how to minimize yours

United's phone lines are busiest on weekday afternoons and evenings, especially between 2 p.m. and 6 p.m. Eastern time. Weekday mornings before 10 a.m. and late evenings after 8 p.m. typically have shorter waits. Weekends are moderately busy throughout the day.

The busiest travel seasons — around holidays, spring break, and summer — mean longer waits across all times of day. If you are flexible on when you call, aim for a Tuesday, Wednesday, or Thursday morning. If you must call during peak hours, have your information ready so you can complete your transaction quickly once a representative picks up.

What you cannot do on the phone and what to do instead

Some tasks are faster or only available online or through the United app. You cannot check in for a flight by phone — check in opens 24 hours before departure on the website or app. You cannot view your frequent flyer account balance or redeem miles by calling the main reservation line; call the MileagePlus program at 1-800-421-4655 for that.

If you need to report a lost or damaged bag, call baggage services at 1-877-435-9338 rather than the main line. For refund requests related to a cancelled flight or significant delay, the phone line can help, but you can also start the process online through "Manage My Booking" on United's website. For complaints about service or to file a formal dispute, use the website's customer relations form, which creates a documented record.

Using the automated system before speaking to a representative

When you call 1-800-864-8331, an automated system answers first and asks what you need. You can say "new booking," "change reservation," or "frequent flyer" out loud, or press the corresponding number on your keypad. The system understands natural speech, so you do not have to memorize menu options.

The automated system can handle some tasks without a representative — it can confirm your reservation details, tell you your confirmation number, and in some cases process straightforward changes like seat selection. If the system cannot complete your request, it will transfer you to a representative. Staying on the line and following the prompts is usually faster than pressing zero repeatedly to skip to a person.

Alternative ways to reach United without calling

If you prefer not to call, United offers other ways to book and manage reservations. The website at united.com has a "Manage My Booking" section where you can change dates, add seats, and view your itinerary without waiting on hold. The United app (available on iPhone and Android) does the same thing and often loads faster on mobile.

For new bookings, both the website and app show fares and allow you to complete a purchase in minutes. Chat support is available on the website during business hours if you have questions before booking. Some issues — like disputes over a charge or requests for exceptions to policy — still require a phone call or written request, but routine changes and new bookings are usually quicker online.

Frequently Asked Questions

How long will I wait on hold when I call?

Wait times range from a few minutes to over an hour depending on the time of day and travel season. Calling on a weekday morning typically means a 10- to 20-minute wait. Calling on a Friday evening or during a holiday week can mean 45 minutes or longer. The automated system will tell you the estimated wait time after you select your reason for calling.

Can I book a flight for someone else by calling?

Yes. You can book a flight for another person by providing their name, date of birth, and contact information. The ticket will be issued in their name, and they will receive the confirmation email. You will need to provide a credit card for payment, but the ticket itself belongs to the person whose name is on it.

What if I need to cancel a flight I booked?

Call 1-800-864-8331 and tell the representative you want to cancel. Whether you receive a refund or a credit depends on the fare type you purchased and when you cancel. Basic economy fares typically cannot be refunded but can be converted to a credit. Premium fares usually allow refunds. The representative will explain your options before processing the cancellation.

Do I need to call to add a checked bag?

No. You can add a checked bag on the website, in the app, or at the airport. Adding it online or in the app before your trip is usually cheaper than adding it at the airport. If you have already checked in and need to add a bag, you can do it at the airport counter or call the reservation line, though a phone call may take longer than walking to the counter.

What if the phone system does not understand what I am saying?

Say "representative" or press zero on your keypad to skip the automated system and go directly to a person. You can also try rephrasing your request in simpler terms — for example, say "change my flight" instead of "modify my reservation." If the system still does not understand, it will transfer you to a representative automatically after a few attempts.