How to Change Date of Birth on United Airlines Ticket

Typed the wrong birth year while booking? It happens more than you’d think. Maybe you were rushing through checkout on your phone, or you booked for your kid and mixed up the month and day. Either way, don’t panic. This is one of the most common ticketing errors, and United has a clear process for fixing it.

Here’s everything you need to know, laid out the way you’d actually ask it.

Why does my date of birth even matter on a plane ticket?

It’s not just a formality. Your date of birth on a United reservation gets checked against the TSA’s Secure Flight program before you ever reach the airport. That system matches your name, birth date, and gender against government watchlists.

If your ticket doesn’t match your ID, you risk two things: losing TSA PreCheck eligibility on that boarding pass, and getting pulled aside at the checkpoint for extra verification. Neither ruins your trip, but both eat into time you didn’t plan to spend standing in a line.

Insight: If you have TSA PreCheck or Global Entry, double-check your date of birth the moment you book. A mismatched birth date is one of the top reasons travelers lose their PreCheck indicator on the boarding pass, even when everything else is correct.

Can I actually fix a wrong date of birth on United?

Yes. United allows corrections to date of birth, but it draws a line between a correction and a change.

• A correction fixes a genuine data entry mistake, like typing 1990 instead of 1998.
• A change would mean altering your actual identity information, which airlines don’t do freely, since it could otherwise be used to get around fare rules or transfer a ticket to someone else.

So if you’re fixing a typo, you’re in good shape. If you’re trying to legally update your birth date after something like an adoption or a legal name and identity change, you’ll need supporting documents.

Before you contact United, know which category you’re in. Typo corrections move fast. Legal changes take longer because an agent has to verify documentation, so build in extra time if that’s your situation.

Where do I go to fix it myself?

United doesn’t let passengers self-edit a date of birth through the “Manage Reservations” section of united.com or the mobile app once a ticket is booked. That field is locked for security reasons, since it ties directly into Secure Flight screening.

So this isn’t a self-service fix. You’ll need a real person to make the change on your record.

Insight: Don’t waste time hunting through app menus looking for an edit button. If the date of birth field looks greyed out or unclickable, that’s expected. It’s not a glitch, it’s United’s way of keeping that data protected.

Who do I actually contact to correct it?

You have two reliable paths:

1. Call United Airlines Reservations directly at 1-800-864-8331 (available 24/7). Explain that you need a date of birth correction on an existing reservation, and have your confirmation number ready.
2. Speak to an airport check-in agent if you’re within a day or two of travel. They can often correct minor data errors right at the counter, especially if you flag it early.

Call sooner rather than later. If you catch the error right after booking, the fix is usually a two-minute conversation. If you wait until you’re at security and the TSA agent notices the mismatch, you could get sent back to the ticket counter, which is a much more stressful way to solve the same problem.

What documents should I have ready?

For a simple typo correction, you generally just need:

• Your confirmation number or record locator
• A government-issued ID (passport or driver’s license) showing your correct date of birth

For a legal date of birth change (not a typo, but an actual updated legal record), be ready to provide:

• Legal documentation supporting the change, such as a court order or amended birth certificate
• Matching updated ID, if available

Keep a photo of your ID saved on your phone before you call. Airline agents often ask you to read details back to them for verification, and having it pulled up already saves you from digging through a bag mid-call.

Will fixing my date of birth cost me anything?

For a genuine correction of a clerical error, United typically does not charge a fee. Airlines distinguish clerical fixes from actual reissues or fare changes, since a wrong birth year doesn’t change what you paid for the flight.

That said, if the correction somehow affects a fare category tied to age, like a child or infant fare being adjusted because the original birth date placed the passenger in the wrong age bracket, there could be a fare difference. This is rare for adult tickets but worth asking about directly when a child’s ticket is involved.

If you’re booking for a child under 2 who will fly as a lap infant, get the birth date right the first time. Infant fare rules depend heavily on age at the time of travel, and a wrong entry here is more likely to trigger a fare adjustment than an adult ticket correction would.

Does my MileagePlus account need fixing too, or just the ticket?

Both, if they’re mismatched. Your MileagePlus profile and your individual flight reservation are stored separately. Correcting one doesn’t automatically correct the other.

If your MileagePlus account has the wrong birth date, you can typically update it yourself by logging in and going to your account profile settings. If that field is locked, that also usually means it requires a phone call for verification, same as the reservation fix.

If you fly United often, fix your MileagePlus profile first. Once that’s accurate, most future bookings will pull the correct birth date automatically, which cuts down on this problem happening again.

What if I booked through a travel agency or third-party site, like Expedia?

This is where things get slightly more complicated. If you booked through a third party, that agency’s system holds the original booking data, and changes made there don’t always sync to United’s internal Secure Flight record.

Practically, this means you may need to call United directly regardless of where you booked, because United’s “Master PNR” is what airport agents and TSA actually reference. The travel agency can update their own file, but that doesn’t guarantee United’s system reflects the same fix.

If you booked through a third party, call United first and ask them to check what your Secure Flight record actually shows. Don’t assume a correction made with the booking site carried over.

How close to my flight can I still get this fixed?

There’s no strict cutoff, but timing changes how smooth the process is:

• Weeks before travel: Simple phone call, usually resolved same day.
• 24–48 hours before travel: Still doable, but call rather than email, since email response times are too slow for last-minute fixes.
• Day of travel: Go straight to the airport check-in counter. Agents there can often override minor data errors on the spot, faster than a phone queue.

If you’re traveling same-day and discover the error at home, don’t wait until you reach security. Stop at the check-in desk before you go through the checkpoint. It’s a five-minute fix there versus a much longer conversation with a TSA agent who’s already flagged a mismatch.

What happens if I don’t fix it before I fly?

Nothing catastrophic in most cases, but it’s a gamble. Many travelers fly with a small date-of-birth mismatch without incident, especially on domestic routes where boarding passes are still scanned rather than IDs.

The risk grows at checkpoints using newer TSA ID-scanning technology, which cross-references your physical ID against the airline’s Secure Flight data in real time. A mismatch there is caught immediately, and it can mean a trip to the ticket counter while your flight boards without you.

If you’re flying internationally, treat this as non-negotiable. Immigration and customs systems abroad are far less forgiving of data mismatches than a domestic TSA checkpoint, and a wrong birth date can create real problems on arrival.

Quick recap: the fastest way to fix it

1. Catch the error, ideally right after booking.
2. Have your confirmation number and ID ready.
3. Call United Reservations at 1-800-864-8331, or visit an airport check-in counter if travel is imminent.
4. Ask them to verify your Secure Flight data matches, especially if you booked through a third party.
5. Update your MileagePlus profile separately if that’s also incorrect.
6. If you got your name wrong then visit United name change policy to get it fix asap.

A wrong date of birth feels like a small thing until you’re standing at security with a mismatched ID. The fix itself is usually simple. The only real mistake is waiting too long to make the call.

A note on phone numbers: airline-related scam sites frequently post fake “customer service” numbers designed to route you to unauthorized third-party agents who may charge hidden fees. Always verify a United Airlines contact number through united.com directly, or use the number listed above, which is United’s published reservations line as per Flying Rules.