Where to find your flight number

Your flight number is a combination of letters and numbers—usually two letters followed by one to four digits—that identifies your specific flight. It appears on your confirmation email, boarding pass, and airline website. If you booked through an airline directly, check your email inbox for the confirmation message sent after purchase; the flight number is listed near the top alongside the date and departure time. If you booked through a travel site like Kayak, Expedia, or Google Flights, log into that site with your confirmation number and you'll see the flight number in your itinerary.

Once you have your confirmation number (a six-character code the airline gave you at booking), you can also find your flight number by visiting the airline's website directly. Go to "Manage My Booking" or "Check Flight Status," enter your confirmation number and last name, and the system will display all your flight details including the flight number. This method works whether you booked directly with the airline or through a third party.

Key Takeaways

  • Your flight number appears on your confirmation email, boarding pass, and the airline's website under "Manage My Booking."
  • The flight number is a two-letter airline code plus one to four digits, such as AA1234 or UA42.
  • You can retrieve your flight number using your confirmation number and last name on the airline's website, even if you booked through a travel site.
  • Your boarding pass—printed or digital—always shows the flight number in the top section near the barcode.

Finding your flight number on your boarding pass

Your boarding pass is the fastest place to look. If you have a printed copy, the flight number appears in the upper left or upper right corner, usually labeled "Flight" or "Flt." The number is printed in large text and is hard to miss. If you have a digital boarding pass on your phone, open your airline's app or the email containing your pass, and look for the same label in the top section.

Most airlines also let you read or screenshot your boarding pass from their app before you arrive at the airport. Open the airline's mobile app, log in with your confirmation number or frequent flyer account, and select the flight. The boarding pass will display on your screen with all details including the flight number, gate (once assigned), and boarding time.

Retrieving your flight number from your confirmation email

Search your email inbox for the confirmation message from the airline or travel site where you booked. The subject line usually says "Flight Confirmation" or "Your Booking Confirmation." Open that email and scroll to the itinerary section. The flight number is listed alongside the departure date, departure time, and destination airport code.

If you cannot find the email, check your spam or promotions folder—confirmation emails sometimes land there by mistake. You can also search your email for the airline name or your confirmation number to pull up the message. Once you locate it, save or screenshot the email so you have the flight number handy.

Using your confirmation number to look up flight details

Your confirmation number is a six-character code (letters and numbers mixed) that the airline or travel site provided at the moment you completed your booking. This code is your key to retrieving any flight information, including the flight number, from the airline's website.

Visit the airline's homepage and look for a link labeled "Manage My Booking," "Check Flight Status," or "Retrieve My Booking." Click that link and enter your confirmation number and last name. The system will pull up your entire itinerary, including the flight number, departure and arrival times, seat assignment, and any changes to your flight. This method works regardless of whether you booked directly with the airline or through Expedia, Kayak, or another travel site.

What to do if you cannot locate your flight number

If you have lost your confirmation email and cannot access your boarding pass, contact the airline's customer service line. Have your last name and date of birth ready, as the airline will use these to look up your reservation. You can also visit the airline's ticket counter at the airport; staff there can print a new boarding pass and provide your flight number when ready.

If you booked through a travel site and cannot find your confirmation number, log into your account on that site. Your booking history should show all past and upcoming flights with their confirmation numbers. From there, you can use the confirmation number to look up your flight details on the airline's website.

Understanding flight number format and what it tells you

Flight numbers follow a standard format: a two-letter airline code followed by one to four digits. For example, American Airlines uses AA, United uses UA, Delta uses DL, and Southwest uses WN. The number portion identifies the specific flight on that route. A flight might be AA100 (American Airlines flight 100) or UA2847 (United flight 2847).

The flight number does not change if your flight is delayed or rescheduled to a different time on the same day. However, if your flight is cancelled and rebooked on a different day or a different airline, you will receive a new flight number. The flight number also does not indicate the aircraft type or the specific plane you will fly on—that information appears separately on your boarding pass as the "aircraft" or "equipment" field.

Frequently Asked Questions

Is my flight number the same as my confirmation number?

No. Your confirmation number is a six-character code the airline uses to look up your reservation. Your flight number is the airline code plus digits that identify the specific flight. You need the confirmation number to find the flight number, but they are different.

Can I find my flight number if I booked through a travel site?

Yes. Log into your account on the travel site and view your booking. You will see your flight number listed in the itinerary. You can also use your confirmation number on the airline's website to look up the flight number directly.

Will my flight number change if my flight is delayed?

No. A delay does not change the flight number. If your flight is cancelled and you are rebooked on a different flight, you will receive a new flight number and a new confirmation number.

Where is the flight number on my mobile boarding pass?

Open your airline's app or the email with your digital boarding pass. The flight number appears near the top of the pass, usually in the upper left or right corner, labeled "Flight" or "Flt."

What if I booked my flight years ago and cannot find the confirmation email?

Visit the airline's website and use "Manage My Booking" with your last name and date of birth. If the reservation is still in the system, you can retrieve all flight details. If the booking is too old to appear in the system, contact the airline's customer service line directly.