What a ground stop at O'Hare means and how to learn about one is active
A ground stop at O'Hare International Airport means the Federal Aviation Administration (FAA) has ordered all aircraft to stay on the ground — no planes can take off, and incoming flights are held at their departure airports. This happens when weather, equipment failure, or air traffic congestion makes it unsafe or impossible to land planes at O'Hare. A ground stop can last anywhere from 30 minutes to several hours, depending on what caused it.
To find out right now whether O'Hare is on a ground stop, check the FAA's official ground stop information page at faa.gov/air_traffic/nas/status. This page updates in real time and lists every airport in the United States currently under a ground stop, along with the reason and expected duration. You can also call the FAA's flight service station at 1-800-WX-BRIEF (1-800-992-7433) and ask about O'Hare's status, though the website is faster.
Airlines also post ground stop information on their own websites and apps, but the FAA page is the official source. If you are a passenger, your airline will notify you by email or text if your flight is affected, but checking the FAA site yourself means you do not have to wait for that message.
Key Takeaways
- The FAA's official status page at faa.gov/air_traffic/nas/status shows ground stops at O'Hare and every other U.S. airport in real time.
- A ground stop means no planes can take off from O'Hare and flights heading there are held at their departure airports until the stop lifts.
- Ground stops usually last 30 minutes to several hours and are caused by severe weather, equipment problems, or heavy air traffic.
- Your airline will contact you if your flight is delayed by a ground stop, but checking the FAA site yourself gives you information when ready.
Why O'Hare goes on ground stop
The most common reason for a ground stop at O'Hare is severe weather — thunderstorms, heavy snow, low visibility from fog, or high winds that make landing unsafe. During summer months, afternoon thunderstorms can trigger ground stops that last an hour or two. In winter, heavy snow or ice on the runways forces the FAA to halt all traffic while crews clear them.
Equipment failures also cause ground stops, though less often. If a runway is damaged, a taxiway is blocked, or critical air traffic control equipment goes down, the FAA may order a stop until repairs are complete. Occasionally, a ground stop happens because of extreme congestion — so many planes are trying to land that the airport cannot handle them safely, so the FAA holds departing flights to prevent a backup.
A ground stop is different from a ground delay, which means planes can still take off but with a delay. Ground delays are more common and usually last shorter. A ground stop is the most severe action the FAA can take at an airport.
How long ground stops usually last
Most ground stops at O'Hare last between 30 minutes and 2 hours. If the cause is a passing thunderstorm, the stop may lift quickly once the storm moves away. If the cause is heavy snow, the stop lasts as long as it takes crews to clear the runways — often 1 to 3 hours depending on how much snow fell.
Occasionally a ground stop lasts longer. Equipment failures can take several hours to repair. During major winter storms, O'Hare has experienced ground stops lasting 4 to 6 hours or more. The FAA updates the expected duration on its status page as the situation changes, so check back every 15 to 30 minutes if you are waiting for news about your flight.
What happens to your flight during a ground stop
If your flight is scheduled to depart from O'Hare during a ground stop, your plane stays at the gate and does not push back. You may board on time, but the aircraft will not move until the stop lifts. If your flight is scheduled to arrive at O'Hare, your plane waits at its departure airport — you do not board, or if you have already boarded, the plane returns to the gate.
Once the ground stop lifts, flights resume in the order they were scheduled, though there is usually a backlog. Your flight may take off 30 minutes to several hours after the stop ends, depending on how many other planes are ahead of you. The airline will tell you the new departure time once it becomes clear.
If you are connecting through O'Hare, a ground stop can cause you to miss your connection. Talk to a gate agent or call your airline as soon as you know about the stop — they can rebook you on a later flight or a different route before the backlog gets worse.
Checking the FAA status page step by step
Go to faa.gov/air_traffic/nas/status in your web browser. The page shows a map of the United States with airports marked in different colors. Green means normal operations. Yellow means delays. Red means a ground stop or major disruption.
Look for Chicago O'Hare (labeled ORD on the map) and click on it. A box will pop up showing the current status, the reason for any delays or stops, and the expected duration. If there is a ground stop, it will say "Ground Stop" in the status line. If there are only delays, it will say "Delays" and list the average delay time.
You can also scroll down the page to see a list of all airports with delays or ground stops. Find O'Hare (ORD) in that list for the same information. The page refreshes automatically every few minutes, so you do not have to reload it yourself.
What to do if O'Hare is on a ground stop
If your flight is affected, contact your airline right away. Call the number on your ticket, use the airline's app, or go to the airline's website. Do not wait for the airline to contact you — you may be able to rebook on a different flight or route before other passengers do. If you are at the airport, go to the ticket counter or a gate agent.
If you have not left home yet, wait to hear from your airline before heading to the airport. There is no point arriving early if your flight is delayed several hours. Keep checking the FAA status page and your airline's website for updates on when the stop will lift and when your flight will depart.
If you are stranded overnight because of a long ground stop, ask your airline about hotel and meal vouchers. Airlines are required to provide these in certain situations, though policies vary. Have your booking confirmation and boarding pass ready when you ask.
Frequently Asked Questions
Can I see a history of past ground stops at O'Hare?
The FAA status page shows only current and recent ground stops, not a full history. If you want to know whether a ground stop happened on a specific past date, contact O'Hare directly at 773-686-2200 or check news archives from that day. Airlines also keep records of delays and cancellations caused by ground stops.
What is the difference between a ground stop and a ground delay?
A ground delay means planes can still take off, but with a wait — usually 15 minutes to an hour. A ground stop means no planes can take off at all. Ground delays are more common and usually shorter. The FAA uses ground stops only when conditions are serious enough that even delayed takeoffs are unsafe.
Does a ground stop at O'Hare affect other Chicago airports?
Not necessarily. Midway Airport (MDW) and smaller regional airports around Chicago operate independently. A ground stop at O'Hare does not automatically trigger one at Midway, though severe weather affecting the whole region may cause delays at multiple airports. Check the FAA status page for each airport separately.
Will my airline refund my ticket if a ground stop causes me to miss my connection?
Airlines are not required to refund tickets because of weather or air traffic delays, including ground stops. However, most airlines will rebook you on the next available flight at no extra charge. If you want a refund instead of a rebooking, ask the airline — policies vary by carrier and ticket type.
How far in advance can the FAA predict a ground stop?
The FAA usually cannot predict ground stops more than a few hours ahead. Weather forecasts help predict storms, but the exact timing and severity are hard to know in advance. Equipment failures are unpredictable. The FAA issues a ground stop order only when conditions are actually unsafe, not based on forecasts alone.