Most flights do not get cancelled, but weather and crew problems are the main reasons when they do
A flight cancellation is rare — most airlines complete over 99 percent of scheduled flights. When a cancellation does happen, it is almost always because of weather, a mechanical problem the airline found during preflight checks, or a crew member calling in sick or running late from a previous flight. Airlines cannot predict weather hours in advance with certainty, and they cannot legally fly a plane with a known mechanical issue or without enough crew. Cancellations are not random — they follow patterns based on the season, the airport, and the time of day.
You cannot know for certain whether your flight will be cancelled until the airline makes that decision, which usually happens between 24 hours and a few hours before departure. Some airlines post cancellations earlier than others. The airline is required to tell you about the cancellation, but the method and timing depend on how you booked and what contact information you gave them.
Key Takeaways
- Weather, mechanical issues found during preflight checks, and crew shortages cause the vast majority of flight cancellations.
- Airlines typically announce cancellations between 24 hours and a few hours before departure, though some announce sooner.
- If your flight is cancelled, the airline must rebook you on the next available flight at no extra cost or refund your ticket price.
- Winter flights, flights from airports in mountainous regions, and evening flights are statistically more likely to be cancelled than others.
- You can check your flight status on the airline's website or app, or call the airline directly — do not rely only on email or text alerts.
Weather is the most common reason for cancellation
Severe weather — heavy snow, ice, thunderstorms, or high winds — makes it unsafe or impossible for planes to take off or land. Airlines cannot legally operate in conditions that exceed the aircraft's limits, and ground crews cannot safely de-ice a plane or push it back from the gate in extreme wind. Winter months see more cancellations overall, and airports in mountainous regions or near the coasts see more weather-related cancellations year-round.
Weather forecasts change, so an airline might cancel a flight based on a forecast that later improves, or keep a flight scheduled when conditions worsen unexpectedly. Airlines use their own meteorologists and historical data to decide, but they cannot always predict what will happen in the next few hours. If weather is the reason for your cancellation, the airline is not required to pay you compensation under U.S. law, because weather is considered outside the airline's control.
Mechanical problems and crew issues cause most other cancellations
During preflight checks, mechanics inspect the engines, hydraulics, electrical systems, and other equipment. If they find a problem that could affect safety, the flight is cancelled. The airline cannot legally fly the plane until it is fixed. These cancellations are less predictable than weather because the problem is discovered only hours before departure, after the plane has already been scheduled.
Crew cancellations happen when a pilot or flight attendant calls in sick, misses a connection from a previous flight, or is unavailable for another reason. Airlines schedule crew with buffer time, but unexpected absences still occur. Unlike weather, mechanical problems and crew issues are within the airline's control, so you may be may have access to to compensation depending on the airline's policy and the reason for the delay or cancellation.
How to learn about your flight is cancelled
The airline will post cancellation information on its website and app first. Log in with your confirmation number and check your flight status — most airlines update this in real time. You can also call the airline's customer service line, though wait times are long when many flights are cancelled. Do not wait for an email or text alert; check the website yourself, especially if your flight is scheduled within 24 hours.
Third-party flight tracking apps like FlightAware show cancellations, but they update slightly behind the airline's own system. If you see a cancellation on a tracking app, confirm it on the airline's website before making other plans. Some airports post cancellation information on their own websites and apps as well.
What the airline must do if your flight is cancelled
By law, the airline must rebook you on the next flight to your destination at no extra cost. This can be the airline's own next flight or a flight on another airline if the airline does not have another flight that day. You do not have to accept the rebooking — you can also ask for a refund of your ticket price instead. The refund goes back to your original payment method, and it can take several days to appear in your account.
The airline is not required to pay for meals, hotels, or other expenses unless the cancellation was caused by something within the airline's control — typically a mechanical problem or crew issue, not weather. Some airlines offer vouchers or meal tickets anyway, but this is a policy choice, not a legal requirement. Check your airline's policy on its website or ask a customer service agent what they will cover.
Flights most likely to be cancelled
Winter flights (December through February) have higher cancellation rates than summer flights, especially in northern regions. Flights departing in the evening are cancelled more often than morning flights, because weather and crew problems accumulate throughout the day. Airports in mountainous areas, near the ocean, or in regions with unpredictable weather see more cancellations overall.
Connecting flights are cancelled more often than direct flights, because a problem on an earlier flight can cascade — if the plane or crew is late arriving, the next flight may be cancelled. If you are booking a connecting flight during winter or in a region prone to weather delays, building in extra time between connections reduces the risk that a delay on your first flight will cause you to miss the second one.
What to do if your flight is cancelled
First, check the airline's website or app to see the cancellation and your rebooking options. If you prefer a refund, contact the airline by phone or through its website to request one. Keep your confirmation number and any emails from the airline about the cancellation — you may need them if you paid for other travel (a hotel, a rental car, or a connecting flight on another airline) that you now cannot use.
If the airline cancelled your flight and you paid for a non-refundable ticket, you still have the right to a refund or a rebooking. Do not accept a travel credit or voucher if you want your money back — ask specifically for a refund to your original payment method. If the airline refuses, you can file a complaint with the U.S. Department of Transportation, though this process takes weeks and does not may provide a refund.
Frequently Asked Questions
Can I get money back if my flight is cancelled?
Yes. You can ask the airline for a refund of your ticket price, which goes back to your original payment method. You can also accept a rebooking on another flight instead. The airline does not have to pay you extra compensation for a weather cancellation, but some airlines offer meal vouchers or hotel stays as a courtesy.
How far in advance do airlines announce cancellations?
Most cancellations are announced between 24 hours and a few hours before departure. Some airlines post cancellations sooner if they know about a problem early — for example, a plane that needs maintenance overnight. Check the airline's website directly rather than waiting for an email or text, because the website updates first.
If my flight is cancelled, can I book a flight on a different airline?
The airline that cancelled your flight must rebook you on another airline if it does not have another flight to your destination that day. You cannot unilaterally book a different airline and expect the original airline to pay for it. If you want to fly on a different airline instead of waiting for a rebooking, you can ask for a refund and book separately at your own cost.
What if the airline cancels my flight and I already paid for a hotel?
The airline is not responsible for your hotel or other travel costs unless the cancellation was caused by a mechanical problem or crew issue — not weather. You may be able to cancel or reschedule your hotel reservation, depending on its cancellation policy. Contact the hotel directly to ask about your options.
Does travel insurance cover flight cancellations?
Some travel insurance policies cover cancellations caused by weather or other events outside your control, but policies vary widely. Read your policy's terms to see what is covered and what is not. If you do not have travel insurance, the airline's rebooking or refund is your only option.