Check the National Weather Service and your airline's status page first

Whether it is safe to fly tomorrow depends on weather conditions at your departure and arrival airports, and only your airline and the National Weather Service can tell you that right now. Do not rely on today's weather or yesterday's forecast—conditions change, and what looks clear this afternoon may be dangerous by tomorrow morning.

Start by visiting the National Weather Service website for your departure city and your destination. Look for any active winter storm warnings, severe thunderstorm warnings, or wind advisories scheduled for tomorrow. These are the conditions that typically ground flights or cause delays. Then go directly to your airline's website and search for your flight number. Most airlines post flight status updates 24 hours before departure, and they will tell you if weather is already affecting service.

If your airline has not posted a status yet, that usually means they expect the flight to operate normally. Status pages update as conditions develop, so check again 12 hours before departure and again 2 to 3 hours before you leave for the airport.

Key Takeaways

  • The National Weather Service website shows active warnings for your departure and arrival cities that may affect flight operations.
  • Your airline's website will display flight status updates starting about 24 hours before departure if weather is expected to cause delays or cancellations.
  • Weather conditions can change overnight, so check the forecast again 12 hours before your flight and once more before leaving for the airport.
  • Wind, ice, and low visibility are the conditions most likely to ground flights; rain alone rarely prevents takeoff unless it is part of a larger storm system.
  • If your airline cancels your flight, you have the right to a refund or rebooking on the next available flight at no extra cost.

Understand what weather actually stops flights

Not all bad weather grounds planes. Rain, fog, and moderate winds do not typically prevent takeoff. Airports have equipment and procedures to handle these conditions, and pilots train extensively for them. The conditions that actually stop flights are severe thunderstorms with lightning and hail, winter storms with heavy snow or ice accumulation, wind gusts above the aircraft's operating limits (usually 40 to 50 mph depending on the plane), and visibility so low that pilots cannot see the runway.

Winter weather is the most common reason for cancellations and delays. If the forecast shows heavy snow, freezing rain, or blizzard conditions for tomorrow, your flight is at real risk. Check whether the warning is for your specific airports—a winter storm warning 50 miles away may not affect your flight if the airport itself is in clear conditions.

Thunderstorms are unpredictable and can develop quickly. If the forecast shows a chance of severe thunderstorms during your flight window, the airline may not know until a few hours before departure whether the storm will actually hit the airport. This is why thunderstorm delays often happen with little warning.

What to do if weather looks uncertain

If tomorrow's forecast shows a chance of bad weather but nothing is certain yet, contact your airline directly. Call their customer service line or use the chat feature on their website. Tell them your flight number and ask whether they are monitoring the forecast and what their contingency plan is. They can tell you whether they expect delays, whether they are allowing free rebooking to earlier flights, and what your options are if the flight is cancelled.

Some airlines allow you to rebook on an earlier flight the same day at no cost if weather is in the forecast, even if your original flight has not been cancelled yet. This is not may provide—policies vary—but it is worth asking. If you rebook to an earlier flight and the weather does not materialize, you are on a flight that leaves sooner, which is usually better than waiting.

If you are nervous about flying in marginal conditions, you can also ask about changing your flight to a different day. Most airlines will waive the change fee if severe weather is in the forecast for your original date, though they may charge you the difference in fare if the new flight costs more.

Monitor forecasts as your flight gets closer

The National Weather Service updates forecasts every few hours, and accuracy improves as the day approaches. A forecast made three days out is much less reliable than one made 12 hours before your flight. If tomorrow is still three or more days away, check the forecast again tomorrow and the day after—conditions may change significantly.

Set a phone reminder to check your airline's website 12 hours before departure and again 2 to 3 hours before you need to leave for the airport. This is when the airline will have the most current information and when you still have time to make changes if needed. If your flight is cancelled at this point, rebooking options may be limited, so knowing early matters.

If you are flying into a destination with weather concerns, also check the forecast for your arrival airport. A flight can be cancelled because conditions at the destination are unsafe, not just because of weather where you are taking off.

Know your rights if your flight is cancelled or delayed

If your flight is cancelled due to weather, the airline must offer you a refund or a rebooking on the next available flight at no extra cost. You do not get a cash payment for weather delays—weather is considered an act beyond the airline's control—but you do get to reach your destination without paying again.

If you are delayed more than a few hours, ask the airline whether they will cover meals or a hotel room. Some airlines do this voluntarily; others only do it if the delay is their fault, not weather. It does not hurt to ask. If you miss a connection because of a weather delay on your first flight, the airline is responsible for getting you to your final destination, even if it takes an extra day.

Keep your boarding pass and any receipts for meals or transportation. If you end up disputing the airline's handling of the delay later, these documents help prove what happened.

Prepare for the possibility of delays even if weather looks okay

Even if tomorrow's forecast looks clear, weather elsewhere in the country can affect your flight. Air traffic control may slow down flights into your destination if there is weather hundreds of miles away, or your aircraft may be delayed arriving from a previous flight that was affected by weather somewhere else. These delays are harder to predict and do not show up on your airline's website until a few hours before departure.

Pack any medications, important documents, and valuables in your carry-on bag, not checked luggage. If your flight is delayed overnight, you want access to what you need. Wear comfortable clothes and bring a book, headphones, or a phone charger—delays happen, and being prepared makes them less stressful.

If you are traveling with a tight connection, bad weather anywhere on your route increases the risk that you will miss it. Consider booking a flight with a longer layover if weather is in the forecast, or book a flight the day before if the stakes are high.

Frequently Asked Questions

Can pilots fly in rain or fog?

Yes. Pilots train extensively for rain and fog, and airports have instruments that allow planes to land safely in very low visibility. Rain and fog alone do not stop flights. Heavy snow, ice, or thunderstorms with lightning are the conditions that typically cause cancellations.

What wind speed is too dangerous for planes to fly?

Most commercial aircraft can take off and land safely in winds up to 40 to 50 mph, depending on the plane and the runway. Wind gusts above that threshold may cause cancellations. Check the forecast for wind speed and gusts, not just general wind conditions.

If my flight is cancelled, do I get money back?

You get a refund or a rebooking on the next available flight at no extra cost. You do not receive a cash payment for weather delays, because weather is outside the airline's control. If the airline caused the cancellation (mechanical failure, crew shortage), you may be may have access to to additional compensation depending on the distance and length of delay.

How far in advance do airlines usually cancel flights for weather?

Most cancellations happen 24 to 12 hours before departure, once the airline is confident the weather will actually affect operations. Some cancellations happen just a few hours before the flight if the forecast changes suddenly. Check your airline's website frequently as your flight approaches.

Should I go to the airport if I am worried about weather?

If your airline has not cancelled your flight, go to the airport as planned. If the flight is cancelled, the airline will rebook you there. If you skip the airport and the flight operates, you lose your seat and may have to pay to rebook. Wait for the airline to cancel before changing your plans.