Where to find the reason for your delay
The airline that operated your flight is the source for the actual reason. Most airlines post delay information on their website under "Flight Status" or a similar tool where you enter your flight number and date. You can also call the airline's customer service line — they have access to the flight record and can tell you whether the delay was weather, mechanical, crew-related, air traffic control, or another cause.
If you booked through a travel website like Expedia or Kayak rather than directly with the airline, those sites often show delay status too, but they pull the information from the airline's system. Going straight to the airline's website or phone line is faster because you reach the source.
At the airport, the departure board displays delay status and sometimes a brief reason — "Mechanical," "Weather," or "Air Traffic Delay." Gate agents can also explain what caused the hold-up, though during busy periods they may have limited details.
Key Takeaways
- The airline's website or customer service phone line will give you the official reason for the delay, which you may need for compensation claims or rebooking.
- Delays fall into categories — weather, mechanical, crew-related, air traffic control, or airline-caused — and the category determines whether you are owed compensation under some regulations.
- If you booked through a travel website, contact the airline directly rather than the booking site, because the airline controls the delay information and rebooking decisions.
- Keep your booking confirmation and any delay documentation if you plan to request compensation, because you will need to show the delay length and reason.
Why the reason matters for your rights
The reason for the delay affects whether you can request compensation or a refund. In the European Union, passengers on flights departing from an EU airport are owed compensation for delays of three hours or more — but only if the airline caused the delay. Weather, air traffic control decisions, and security issues are considered "extraordinary circumstances" that exempt the airline from paying compensation.
In the United States, there is no federal compensation requirement for delays, but airlines must follow their own stated policies. Those policies are usually posted on the airline's website under "Customer Service" or "Baggage and Delays." Some airlines offer meal vouchers, hotel rooms, or rebooking on the next available flight for delays over a certain length — often four to six hours — but the policy varies by airline and sometimes by the reason for the delay.
If your flight was cancelled rather than delayed, the rules are stricter. In the EU, cancellation entitles you to compensation or a refund regardless of the reason, with narrow exceptions. In the US, you are owed a refund if you do not want to rebook, but compensation is not automatic.
How to document the delay for a claim
Save your booking confirmation email, your boarding pass, and a screenshot or photo of the departure board showing the delay. If the airline issued a written delay notice — on a receipt, email, or text — keep that too. Write down the original departure time, the actual departure time, and the stated reason.
If you paid for meals, hotels, or transportation because of the delay, keep those receipts. Some airlines and some regulations allow you to recover those costs, but you will need to show what you spent and why.
If you are filing a compensation claim with the airline or through a third-party claim service, you will need to provide the flight number, date, delay length, and the reason the airline gave you. Having this information in writing — from the airline's website, a confirmation email, or a customer service transcript — makes the claim stronger than relying on memory.
Getting delay information after the flight has landed
If you did not check the reason during or when ready after the delay, you can still find it. Log into your airline account on their website and look for "My Trips" or "Booking History." Click on the flight and look for a "Delay Details" or "Flight Status" section. Some airlines keep this information for months; others remove it after a few weeks.
Call the airline's customer service line with your booking reference number and flight date. They can pull up the flight record and tell you the recorded reason for the delay, even weeks later. Have your confirmation email handy so you can provide the flight number quickly.
If you booked a refundable ticket and the delay caused you to miss a connection or decide not to travel, contact the airline within the timeframe stated in their policy — usually 30 days — to request a refund. You will need to explain why the delay affected your travel plans.
What to do if the airline will not give you a reason
Some airlines are vague about delays, especially if the reason reflects poorly on them — for example, "crew scheduling" or "aircraft maintenance." If the airline says only "operational reasons" or "circumstances beyond our control," ask the customer service representative to be more specific. They may provide more detail in a follow-up email if you ask in writing.
If you are pursuing a compensation claim and the airline refuses to state a reason, document that refusal. Take a screenshot of the customer service chat, save the email, or note the date and time you called and the representative's name. Some claim services and regulators view a refusal to explain as evidence that the airline caused the delay.
In the EU, you can file a complaint with your national aviation authority if the airline does not respond to a compensation request within a set timeframe — usually two to three months. In the US, you can file a complaint with the Department of Transportation, though they do not award compensation themselves.
Delays caused by weather versus airline problems
Weather delays are the most common reason flights are held up. If the airline says "weather," they are usually not required to pay compensation in most jurisdictions, because weather is outside their control. However, they should still provide meals, hotel rooms, and rebooking as stated in their policy.
Mechanical delays — engine problems, hydraulic issues, or other aircraft malfunctions — are the airline's responsibility. The airline must fix the problem or find another aircraft. These delays can lead to compensation claims because the airline is responsible for maintaining the aircraft.
Crew-related delays happen when a crew member is sick, delayed getting to the airport, or when the airline does not have a crew member may have access to for that route. These are sometimes treated as the airline's responsibility and sometimes as extraordinary circumstances, depending on the regulation and the specific situation.
Using delay information to rebook or request a refund
Once you know the reason for the delay, you can decide whether to rebook on another flight or request a refund. If the delay was the airline's fault and you missed a connection or decided not to travel, you have a stronger case for a refund. If the delay was weather or air traffic control, the airline is less likely to refund you, but they should still rebook you on the next available flight at no extra cost.
Contact the airline through their website, phone line, or in person at the airport. Provide your booking reference, the flight number, and the delay reason. Explain what you need — a refund, a rebook on a specific date, or compensation for expenses. Keep records of every communication.
If the airline denies your request, you can escalate to their customer relations department or file a formal complaint. Include the delay reason, the length of the delay, and copies of your documentation. The reason the airline gave you is central to your case.
Frequently Asked Questions
Can I get compensation if the airline says the delay was weather?
In the EU, no — weather is an extraordinary circumstance that exempts airlines from compensation. In the US, there is no federal compensation requirement for any delay. However, the airline should still provide meals, hotel, and rebooking under their policy, regardless of the reason.
How long does the airline keep delay information on their website?
This varies by airline. Some keep flight history for several months; others remove it after a few weeks. If you cannot find it online, call customer service with your booking reference and they can look it up in their system.
What if the airline gave me one reason at the airport and a different reason online?
Document both. Take a screenshot of what the website says and note what the gate agent told you, including the date and time. If you are filing a claim, include both versions and explain the discrepancy. Inconsistency can strengthen your case.
Do I need the delay reason to request a refund?
You do not need it to ask for a refund, but it helps your case. If the delay was the airline's fault, you have a stronger argument that you should not have to accept a rebook. If it was weather, the airline is less likely to refund you, but they should still rebook you for free.
Can I file a complaint if the airline will not tell me why the flight was delayed?
Yes. In the EU, you can file a complaint with your national aviation authority. In the US, you can file with the Department of Transportation. Document your attempts to get the information from the airline, including dates, times, and what they told you.