Where to check flight delays in real time

The fastest way to check if flights are being delayed is to go directly to the airline's website or app and search for your flight number. Most airlines show current delays, cancellations, and gate information as soon as they happen. If you do not have a flight number yet, the FAA Flight Delay Information page at faa.gov lists system-wide delays by airport and reason — weather, mechanical issues, staffing, or air traffic control problems.

FlightAware.com and FlightRadar24.com track individual flights in real time and show delays, altitude, speed, and expected arrival time. Both sites work without logging in. You can search by flight number, airline, route, or airport. FlightAware also sends notifications if you create a free account and track a specific flight.

For airport-wide conditions, check the airport's official website or app. Major airports like LAX, JFK, ORD, and ATL post delays and cancellations by airline. If you are picking someone up or dropping them off, the airport site tells you whether to expect delays before you leave home.

Key Takeaways

  • The airline's website or app shows your specific flight's delay status faster than any third-party site because the airline updates it first.
  • FlightAware and FlightRadar24 let you track any flight without a ticket and set up alerts for delays on routes you monitor regularly.
  • The FAA website lists system-wide delays by airport and the reason behind them — weather, mechanical issues, or air traffic control problems.
  • Airport websites show delays and cancellations by airline, which helps if you are picking someone up or need to know whether to head to the terminal.

Why delays happen and how long they usually last

Delays fall into a few categories, and the reason matters for how long you will wait. Weather delays — thunderstorms, fog, snow, or wind — can last from 30 minutes to several hours depending on whether the system is moving through or stalling over the airport. Mechanical delays happen when the plane needs repair before takeoff; these usually run 1 to 3 hours but can stretch longer if parts need to be ordered.

Air traffic control delays occur when the airport or airspace is congested — too many planes trying to land or take off at once. These delays are often 15 to 45 minutes and clear once traffic thins. Staffing delays, less common now than during the pandemic, happen when the airline does not have enough crew members; these can last hours if crew has to be brought in from another city.

The airline's website usually states the reason and estimated delay time. If the reason is not listed, call the airline directly or check FlightAware, which often shows the cause even when the airline has not posted it yet.

What to do while you wait for delay information

If your flight is delayed, the airline is required to keep you informed every 30 minutes while you are on the plane. If you are still at the gate or in the terminal, check the airline's app or website every 15 to 20 minutes — delays change as conditions improve or worsen. Do not rely on the gate agent's first estimate; it often shifts as the airline gets updates from the airport or weather service.

If the delay is more than 3 hours, you may be may have access to to a meal voucher or hotel room depending on the airline's policy and the reason for the delay. Weather delays often do not trigger compensation, but mechanical or airline-caused delays sometimes do. Ask the gate agent what the airline will cover before you spend your own money.

If you are considering rebooking on a different flight, do it through the airline directly — their website or a call to customer service — rather than a third-party booking site. The airline can rebook you for free if the delay is their fault, but third-party sites may charge change fees.

Delays that turn into cancellations

A delay becomes a cancellation when the airline decides the plane will not fly that day. This usually happens when a mechanical problem cannot be fixed quickly, when weather is forecast to worsen rather than improve, or when crew scheduling makes the flight impossible to operate. Once a flight is cancelled, the airline must rebook you on the next available flight at no charge, even if it is on a competing airline.

If you are cancelled, you have three options: take the rebooking the airline offers, request a refund to your original payment method, or wait for a later flight on the same airline. Refunds can take 7 to 30 days to process. If you choose to rebook, do it when ready through the airline, because seats fill fast on alternate flights.

Check your email and phone for notifications from the airline — they often send cancellation alerts before posting them on the website. If you do not receive a notification, call the airline's customer service line to confirm the cancellation and discuss your options.

How to plan around potential delays

Check the FAA delay page the night before your flight and the morning of travel. If your airport or airline is showing patterns of delays, plan to arrive even earlier than usual. Seasonal delays are predictable: summer thunderstorms delay flights in the Southeast and Midwest, winter snow affects the Northeast and Mountain West, and fog regularly delays San Francisco and Los Angeles flights in the morning.

If you are connecting to another flight, a 1-hour connection is risky in major hubs during peak hours. Build in at least 2 hours between flights if you are changing airlines or 90 minutes if you are staying with the same airline. If your first flight is delayed, the airline will hold your connection only if it is on the same ticket.

read your airline's app before you travel. Apps send delay notifications faster than email, and you can rebook yourself without calling customer service. Some airlines let you change flights for free through the app if your original flight is delayed by more than a certain amount — usually 30 minutes to 2 hours.

Tracking delays for future trips

If you fly the same route regularly, FlightAware's free account lets you set up alerts for that route. You will receive notifications if delays are common on that day or time, which helps you plan better. The site also shows historical delay data — you can see that a 6 a.m. flight from Denver to Chicago is delayed 40% of the time in winter, for example.

Some airlines offer text or email alerts if you enroll in their frequent flyer program or read their app. These alerts notify you of delays, gate changes, and boarding time updates. Signing up takes 2 to 5 minutes and works whether you have a ticket booked or not.

Frequently Asked Questions

Can I get money back if my flight is delayed?

Refunds for delays depend on the airline's policy and the reason. Weather delays rarely may have access to for compensation. Mechanical failures or airline staffing issues sometimes do, but policies vary — some airlines offer meal vouchers or hotel rooms instead of cash. Check your airline's website for their specific policy, or call customer service with your flight number.

How do I know if my delay is the airline's fault or weather?

The airline will state the reason on their website or app. Weather delays are listed as "weather" or "air traffic control." Mechanical delays say "mechanical" or "aircraft maintenance." If the reason is not clear, call the airline or check FlightAware, which often has more detail than the airline posts publicly.

What if I miss my connection because of a delay?

If you miss a connection because your first flight was delayed, the airline must rebook you on the next available flight at no charge — even if it is on a different airline. This protection applies only if both flights are on the same ticket. If you booked two separate tickets, the airline has no obligation to help with the second flight.

Do I have to stay at the airport while waiting for a delayed flight?

No, but check the airline's policy first. Some airlines will not reboard you if you leave the airport, even if the delay is long. Others allow you to leave if you provide a phone number. Call the airline or ask the gate agent before you go. If you leave, set a phone alarm so you do not miss your flight.

How far in advance can I see if a flight will be delayed?

Delays usually appear 1 to 3 hours before departure, though weather delays may show up the night before if a storm is forecast. Mechanical delays often appear only a few hours before the flight. Check the night before and again 2 to 3 hours before departure for the most current information.