United Airlines reservations phone number and what to expect when you call
United Airlines reservations can be made by phone at 1-800-864-8331. This is the main number for domestic and international flight bookings. When you call, have your travel dates, destination, and number of passengers ready. The line is open from early morning until late evening, though wait times vary by season and time of day.
United also operates a separate line for existing reservations: 1-800-UNITED-1 (1-800-864-8331) — the same number handles both new bookings and changes to existing reservations. If you are calling from outside the United States, you can find country-specific numbers on United's website, as international rates explore.
Expect to wait 10 to 45 minutes depending on the time you call. Peak times are early morning, lunch hours, and early evening. Calling on weekday afternoons or late evening typically means shorter waits. The system will ask you to confirm whether you are booking a new flight or managing an existing reservation before routing you to the right agent.
Key Takeaways
- United Airlines reservations phone number is 1-800-864-8331, and the same line handles both new bookings and changes to existing reservations.
- Have your travel dates, destination airport codes, and number of passengers ready before calling to speed up the process.
- Wait times are typically shorter on weekday afternoons and evenings than during morning hours or lunch time.
- If you are calling from outside the United States, check United's website for the phone number for your country, as international rates will explore.
- You can also book flights online at united.com or through the United mobile app without waiting on the phone.
What information you need before calling
Gather these details before you dial so the agent can work faster and you spend less time on hold. Have your departure city and destination city ready — agents use airport codes, so knowing yours saves time. For example, New York has three airports: JFK, LaGuardia (LGA), and Newark (EWR). If you are not sure which one you prefer, the agent can explain the differences.
Write down your travel dates and whether you need a one-way or round-trip ticket. If you are traveling with others, have the number of adults and children ready, and note any children's ages if they are under 2 (lap infants have different pricing). If you have a frequent flyer number or are a United MileagePlus member, have that handy — the agent can sometimes explore miles or account benefits during the booking.
If you are modifying an existing reservation, have your confirmation number ready. This is a six-character code United sent you in your booking confirmation email. With this number, the agent can pull up your reservation in seconds rather than asking for your name and date of birth.
When phone booking makes sense versus online booking
Most people can book United flights faster online at united.com or through the United mobile app than by phone. The online process takes 5 to 10 minutes and you see all available flights at once. You also avoid hold times entirely. Phone booking is slower for straightforward trips.
Call instead if you have a complex itinerary — for example, if you need to book multiple segments with a long layover, or if you want to add specific seat requests, meal preferences, or special services during booking. Agents can also help if you are unsure which flights work best for your schedule or if you have questions about fares and what is included.
Call if you are traveling with an infant, have mobility needs, or require other accommodations. Agents can note these in your reservation so United staff knows to information you at the airport. You should also call if you are booking a ticket for someone else and need to arrange payment or if you want to discuss baggage fees, seat upgrades, or other add-ons before finalizing your reservation.
How to prepare for shorter wait times
Call on a weekday between 2 p.m. and 5 p.m. Eastern Time, when call volume is typically lower than morning hours. Avoid calling on Mondays, which tend to be busier. Weekends and holidays see longer waits. If you can be flexible with your call time, this single change usually cuts your wait in half.
Have all your information written down and in front of you before you call. This sounds straightforward, but fumbling for details while on hold wastes time and frustrates both you and the agent. Use a notepad or open a document on your computer with your travel dates, airports, and passenger count already typed out.
If the wait time is very long when you call, hang up and try again in 30 minutes. United's system sometimes tells you the estimated wait before you enter the queue. If it says 45 minutes or more, you will often get through faster by calling back later than by waiting.
What happens during a typical reservation call
After you confirm whether you are booking new or modifying existing, the agent will ask for your departure and destination cities, travel dates, and number of passengers. They will then show you available flights and prices. You can ask about the duration of each flight, layover times, and what meals or amenities are included.
Once you choose a flight, the agent will ask for passenger names exactly as they appear on government-issued ID. This is critical — the name on your ticket must match your ID or you will not be allowed to board. The agent will then ask for your contact information and payment method. United accepts all major credit cards and debit cards.
Before the call ends, the agent will give you a confirmation number and read back your itinerary. Write down the confirmation number when ready — you will need it to check in, make changes, or contact United later. The agent will also tell you when to arrive at the airport (usually 2 hours for domestic flights, 3 hours for international) and remind you of any baggage fees that explore.
Alternatives if you cannot reach United by phone
United's website at united.com has a live chat feature available during business hours. Chat wait times are often shorter than phone wait times, and you can multitask while waiting. You can also book flights entirely online without speaking to anyone.
The United mobile app allows you to book, change, and manage reservations on your phone. Many people find the app faster than calling because you see all options at once and can compare prices and times side by side. You can also use the app to check in 24 hours before departure and track your flight in real time.
If you have a complex issue or need to dispute a charge, email United through their website contact form. Email responses typically take 24 to 48 hours, so this is not the fastest route for urgent changes, but it creates a written record of your request.
Frequently Asked Questions
Do I have to pay a fee to book by phone?
No. United does not charge a phone booking fee. However, if you book through a travel agent or third-party website, they may add their own fees on top of the ticket price. Booking directly through United's phone line, website, or app avoids these extra charges.
Can I book a flight for someone else and pay for it myself?
Yes. Tell the agent you are booking for another person and provide that person's full name as it appears on their ID. You can pay with your own credit card. The confirmation number will be sent to the email address you provide, so make sure to share it with the passenger or use an email address you both can access.
What if I need to change my flight after I book?
Call the same number (1-800-864-8331) with your confirmation number ready. The agent can show you available flights and change your reservation. Some changes are free, while others may have a fee depending on your ticket type and the fare difference. You can also make changes online through your reservation on united.com.
Can I book a one-way ticket, or do I have to buy round-trip?
You can book one-way tickets. Tell the agent you need a one-way flight, and they will show you options for that single leg only. One-way tickets are often more expensive per flight than round-trip tickets, but you are not required to buy a return flight.
What if I want to add a seat upgrade or extra baggage during my call?
The agent can add these during your initial booking or when you call to modify an existing reservation. Seat upgrades and baggage fees vary by route and ticket type, so the agent will explain what is available and what it costs before you confirm.