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'll need your confirmation number or booking reference, which is in your confirmation email. Most airlines show real-time status updates—on time, delayed, cancelled, or boarding—within 24 hours of departure.

If you don't have your confirmation number, you can search by passenger name and departure date on most airline websites. The status updates every 15 to 30 minutes as your flight approaches, so check again an hour before you planned to leave home.

Your airline's app is usually faster than the website because it sends push notifications when your flight status changes. You won't have to keep checking manually.

Key Takeaways

  • Your airline's website or app shows the most current flight status and updates every 15 to 30 minutes as departure approaches.
  • You can search by confirmation number, booking reference, or passenger name and departure date.
  • Third-party flight tracking sites like FlightAware and FlightRadar24 show real-time location and status even before your airline updates its own system.
  • Call your airline directly if the website shows a delay but you want to confirm before leaving home, especially if the delay is more than two hours.
  • Arrive at the airport on your normal schedule if the status says "on time"—delays can change, but so can on-time flights that were briefly delayed.

Use third-party flight tracking sites for real-time location data

FlightAware and FlightRadar24 track planes in the air using radar and aircraft transponder signals. These sites often show delays and gate changes before your airline updates its own website. You search by flight number (for example, United 447) and see the plane's current location, altitude, and estimated arrival time.

These sites are free and don't require a login. The information is public radar data, so it's accurate but sometimes 5 to 10 minutes behind real time. Use them alongside your airline's app, not instead of it, because your airline is the official source for cancellations and gate assignments.

Call the airline directly if you need when ready confirmation

If your flight shows a delay on the website but you're unsure whether to head to the airport, call your airline's customer service line. The number is on your confirmation email and on the airline's website. Have your confirmation number ready.

Customer service can tell you whether the delay is expected to hold, whether the flight might be cancelled, and whether you can rebook on an earlier flight if one is available. This is especially useful if the delay is more than two hours and you're trying to decide whether to leave home now or wait.

Check the airport's website for gate and terminal information

Your airline's app shows flight status, but the airport's website or app shows which gate your flight departs from and any terminal changes. Search for your airport's name plus "airport website" to find the official site. Most airports let you search by flight number and show real-time gate assignments.

Gate assignments often change in the hour before departure, so check the airport site again when you arrive. This prevents you from walking to the wrong gate and missing a boarding call.

Understand what "on time" means and when to arrive

A flight is considered on time if it departs within 15 minutes of the scheduled departure time. If your airline's website says "on time," that's the status as of the last update, but delays can still happen in the final hour. Arrive at the airport at your normal time—usually two hours before domestic flights and three hours before international ones.

If the website shows a delay of 30 minutes or more, you can leave home 30 minutes later than usual, but don't cut it too close. Delays can be reduced or cancelled if the problem clears up, and you don't want to miss boarding because you arrived late.

What to do if your flight is cancelled

If your airline's website shows "cancelled," do not go to the airport. Call the airline when ready or use the airline's app to rebook. Most airlines will place you on the next available flight to your destination at no extra cost, or offer a refund.

If multiple flights are cancelled (usually because of weather), the airline's phone lines will be busy. Try the app first—it often processes rebooking faster than phone lines. If you can't reach anyone, go to the airport in person; the airline must rebook you or refund you by law.

Set up alerts so you don't have to keep checking

Most airline apps let you turn on notifications for your flight. Once you enable alerts, the app will send you a message when your flight status changes, when boarding starts, and when there are gate changes. You won't have to open the app repeatedly.

FlightAware also offers email and text alerts if you create a free account and add your flight. This is useful if you prefer not to read another app or if you want alerts from a source independent of your airline.

Frequently Asked Questions

How far in advance can I check my flight status?

Most airlines show flight status 24 hours before departure. Before that, the status usually shows as "scheduled" with no real-time updates. Check again the day before and the morning of your flight for the most current information.

What's the difference between a delay and a cancellation?

A delay means the flight will depart later than scheduled but will still fly. A cancellation means the flight will not operate that day. Your airline will rebook you on another flight or refund you if your flight is cancelled.

Can a flight status change from on time to delayed after I check?

Yes. A flight can be on time when you check an hour before departure and then delayed 30 minutes later due to weather, mechanical issues, or crew problems. Check again closer to your departure time, especially if conditions are changing.

Do I need to check the airport website if my airline app shows on time?

Your airline app is enough to know whether your flight is departing. Check the airport website or app only when you arrive at the airport to confirm your gate number and terminal, since gates can change in the final hour.

What should I do if my airline's website and a flight tracking site show different times?

Trust your airline's website. It is the official source for departure time, cancellations, and rebooking. Flight tracking sites show real-time location but may lag behind your airline's official updates by a few minutes.