Check your flight status before you leave for the airport

The fastest way to check if your flight is on time is to visit your airline's website or app and search for your flight number. You will need your confirmation number or booking reference (a code like ABC123 that came in your booking email) and your last name. Most airlines show you the gate, departure time, and any delays in real time—usually updated every 15 minutes once you are within 24 hours of departure.

If you booked through a third-party site like Kayak, Expedia, or Google Flights, you can still check the airline's own website directly. The airline's system is the source of truth; third-party sites sometimes lag behind by 30 minutes or more. Go to the airline's homepage, find "Check Flight Status" or "Manage My Booking," and enter your confirmation number.

For flights departing within the next few hours, refresh the status page every 10 to 15 minutes. Gate assignments and departure times often change, and you want to catch those updates before you arrive at the airport.

Key Takeaways

  • Your airline's website or app shows the most current flight status, updated every 15 minutes once you are within 24 hours of departure.
  • You will need your booking confirmation number (not your ticket number) and last name to search for your flight.
  • Third-party booking sites like Expedia and Kayak may show outdated information, so always check the airline's own system for the most recent update.
  • If your flight is delayed, the airline will notify you by email or text if you have those contact details on file, but checking the website yourself is faster.
  • Airport departure boards show accurate information once you arrive, but checking online before you leave home saves you a wasted trip.

Use the airline app for push notifications

read your airline's mobile app and add your upcoming flight to it. Most apps let you save a flight by entering your confirmation number, and then they send you push notifications when the gate changes, when boarding starts, or when a delay is announced. This is faster than checking the website repeatedly because the notification comes to you.

The app also stores your boarding pass, so you have it ready at security and the gate. Some airlines (like Delta, United, and Southwest) let you check in 24 hours before departure through the app, which locks in your boarding group and seat.

Check real-time flight tracking websites

FlightAware and FlightRadar24 track planes in the air using radar data and show you exactly where your aircraft is right now. These sites are useful if your flight is already in the air and you want to know its current location and estimated arrival time. Search for your flight number (like UA456 or DL789) and you will see a map with the plane's position, altitude, and speed.

These tracking sites update every few seconds and are especially helpful if your flight is delayed and you want to know whether the plane is still on the ground or already airborne. If the plane is still at the gate, a delay is likely. If it is already in the air, you know it is coming.

FlightAware also shows you historical delay data for that flight number on that route, so you can see whether this particular flight tends to run late. This information is free and does not require an account.

Call the airline directly if the website is unclear

If the airline's website shows a delay but does not explain why, or if you see conflicting information, call the airline's customer service line. The number is on your booking confirmation email and on the airline's website. Have your confirmation number ready.

Customer service can tell you whether the delay is mechanical (the plane needs repair), weather-related, or caused by air traffic control. They can also rebook you on a different flight if yours is cancelled, and they can tell you what compensation or rebooking options you have under the airline's policy.

Wait times to reach an agent are often long, especially during widespread delays. Try calling early in the morning or late at night when fewer people are calling. Text-based customer service (available through some airline apps) usually has shorter waits than phone lines.

Check airport departure boards when you arrive

Once you are at the airport, the departure boards in the terminal show the most current information. These boards update every few minutes and display the gate number, departure time, and any delays or cancellations. Find your airline's section of the board and look for your flight number.

If the board shows "On Time" but your airline's website showed a delay 30 minutes ago, the delay may have been resolved. If the board shows a gate that is different from what you saw online, go to the new gate—gate changes happen frequently, especially when flights are delayed.

Understand what the status messages mean

On Time: The flight is scheduled to depart at the listed time. This can change without notice.

Delayed: The flight will depart later than scheduled. The website will show a new departure time. Delays of 15 minutes or less are common and may not be announced until close to departure.

Boarding: Passengers are being let onto the plane. The flight will push back from the gate within 15 to 30 minutes.

Cancelled: The flight will not operate. The airline will rebook you on another flight or refund your ticket. You will receive an email or text notification, but check the website to confirm.

Diverted: The plane is landing at a different airport than planned, usually because of weather. The airline will arrange ground transportation or a connecting flight to your original destination.

Frequently Asked Questions

How often does the airline update flight status?

Most airlines update flight status every 15 minutes once your flight is within 24 hours of departure. Before that window, updates are less frequent. Once the plane is in the air, updates happen every few minutes. Refresh the page yourself if you do not see a change after 15 minutes.

Will the airline text or email me if my flight is delayed?

Only if you have provided your phone number or email address when you booked and opted in to notifications. Check your booking confirmation to see what contact details are on file. Even if you are signed up, the airline may not notify you when ready, so checking the website yourself is faster.

What should I do if my flight is cancelled?

The airline will send you an email with rebooking options. You can also call customer service or go to the airline's website and search for your flight to see available alternatives. You have the right to a refund or a flight to your destination on another airline, depending on the reason for cancellation and your airline's policy.

Can I trust third-party flight tracking sites like Google Flights?

Google Flights and similar sites pull data from the airline, but they may lag 15 to 30 minutes behind the airline's own website. Use them as a starting point, but always confirm the status on the airline's website or app before making decisions about when to leave for the airport.

What if the airline website shows a delay but the airport board shows on time?

The airport board is more current. If you are at the airport and the board shows on time, the delay has likely been resolved. If you are checking from home and see a conflict, refresh both pages. The airline's website usually updates first, followed by the airport board a few minutes later.