Where to look for a flight number you took in the past

Your old flight number is usually in your email inbox, on your credit card or bank statement, or in your airline's website account. If you booked through a travel site like Kayak or Expedia, check your email from that site first — most send a confirmation with the flight number within minutes of purchase. If you booked directly with the airline, log into your account on their website and look for "My Bookings" or "Trip Details" — the flight number appears there even after the flight has landed.

If you paid by credit card, your statement shows the airline charge but usually not the flight number itself. However, your bank's online portal sometimes stores the full receipt from the airline, which includes it. Call your airline's customer service line with your name and travel date, and they can pull up the flight number in seconds — they do not need a confirmation number, though having one speeds the process.

Key Takeaways

  • Check your email first — confirmation messages from the airline or booking site contain the flight number and are usually sent within minutes of purchase.
  • Log into your airline account under "My Bookings" or "Trip Details" to see flight numbers for any trip you booked with them, past or present.
  • Call the airline with your name and travel date, and they will retrieve the flight number from their system in one call.
  • If you booked through a travel website, check that site's account page or email receipts before calling the airline.
  • Your credit card statement shows the charge but not the flight number — look at the detailed receipt or transaction details in your bank's app instead.

Checking your email and booking confirmations

Start with your email inbox and search for the airline name or the word "confirmation." Most airlines send a booking confirmation when ready after you purchase, and this message contains the flight number, departure time, gate information (if available), and your booking reference. If you booked months ago, the email may be in an archive folder or marked as read — search your entire mailbox, including spam and promotions folders, since confirmation emails sometimes land there by mistake.

If you used a third-party booking site like Expedia, Kayak, Orbitz, or Google Flights, search for that site's name in your email. These sites send their own confirmation separate from the airline's, and both usually include the flight number. Check both your main inbox and your email's promotions tab. If you still cannot find it, log into the booking site itself — most keep a record of past bookings in your account dashboard, even years later.

Logging into your airline account online

Go to the airline's website and click "Sign In" or "Log In." Enter your frequent flyer number, email address, or last name and confirmation number. Once logged in, look for a section called "My Bookings," "Trip Details," "Reservations," or "Manage My Booking." This section shows all flights you have booked with that airline, including past trips. The flight number appears next to the date and route.

If you do not remember your login credentials, use the "Forgot Password" link on the airline's website. You will receive a reset link by email. If you never created an account, you can still search for your booking without logging in — most airlines have a "Manage Booking" tool that asks for your last name and confirmation number. The confirmation number is usually in your original booking email.

Calling the airline directly

If you cannot find the flight number online, call the airline's main customer service number. You can find this on the airline's website or on your credit card statement if you charged the ticket. Tell the representative your name, the date you traveled, and the city pair (where you flew from and to). They will pull up your reservation in their system and give you the flight number when ready.

You do not need a confirmation number to do this, though having one makes the process faster. The representative may ask for your frequent flyer number or the phone number you used when booking. Have your ID ready in case they ask to verify your identity. Most airlines answer customer service calls within 10 to 20 minutes during business hours, though wait times vary by airline and time of day.

Checking your credit card and bank records

Log into your credit card or bank account online and find the transaction for the airline. Click on the transaction to see the full receipt or details. Some banks and card companies store the complete receipt from the merchant, which includes the flight number. Others show only the airline name and charge amount — in that case, you will need to use one of the other methods above.

If your bank's app does not show the full receipt, try logging into your account on the bank's website instead of the mobile app — the website version sometimes displays more detail. You can also call your bank's customer service line and ask them to pull up the receipt from that transaction date. They may be able to email it to you or read the flight number over the phone.

Using third-party booking sites if you booked through them

If you booked through Expedia, Kayak, Orbitz, Costco Travel, AAA Travel, or another booking site, log into that site's account page. Look for "My Trips," "Bookings," "Reservations," or "Order History." Click on the trip to see the full itinerary, which includes the flight number, airline, departure time, and seat assignment. Most booking sites keep this information available for years, even after the flight has landed.

If you do not remember your login for the booking site, use the "Forgot Password" option. You will receive a reset link by email. If you booked as a guest without creating an account, the booking site may not have a record you can access — in that case, check your email for the confirmation from that site, or call the airline directly with your name and travel date.

What to do if you still cannot find it

If you have tried email, your airline account, and your bank records and still have no flight number, call the airline's customer service line. This is the fastest and most reliable method when other options do not work. Have ready your name, the date you traveled, the cities you flew between, and any other details you remember — the airline representative can search their system by these details alone and will find your flight number.

Some airlines also offer live chat support on their website, which may be faster than calling if you are calling during a busy time. You can also visit an airport ticket counter if you are traveling soon and need the information in person, though this is rarely necessary since the airline can provide it by phone or email.

Frequently Asked Questions

Can I find a flight number if I do not have a confirmation number?

Yes. Call the airline with your name and travel date, and they will find it in their system. You can also check your email for the original booking confirmation, or log into your airline account if you created one. A confirmation number speeds up the process, but it is not required.

How far back can airlines look up old flight numbers?

Most airlines keep booking records for at least several years. If you flew more than five to seven years ago, the airline may have archived the record and it could take longer to retrieve, but they can usually still find it. Call customer service with your name and travel date to ask.

Will the airline charge me to look up an old flight number?

No. Looking up a past flight number is a free service that airlines provide as part of customer service. You will not be charged for calling or for the representative's time to search their system.

What if I booked the flight for someone else?

If you booked it with your email address or credit card, the confirmation will be in your email and your account. If someone else booked it and you were a passenger, ask them for the confirmation email or have them log into their airline account to retrieve the flight number. The airline will not give you the flight number without the name of the person who made the booking.

Do I need the flight number to file a delay claim?

Most airlines and delay compensation services ask for the flight number when you file a claim, but they can also search by your name, booking reference, and travel date. If you cannot find the flight number, provide as much detail as you can about the flight, and the airline or service can look it up for you.