O'Hare's status changes by the hour, and the fastest way to know is to call the airport directly or check its official website

O'Hare International Airport (ORD) in Chicago stays open year-round, but weather, mechanical issues, or air traffic control problems can close runways or halt departures without warning. If you are trying to find out whether O'Hare is operating right now, you have three reliable sources: the airport's own website, the FAA's status page, or a direct call to the airport.

The Chicago Department of Aviation runs O'Hare and publishes real-time updates on flychicago.com. Look for the "Flight Information" or "Airport Status" section—it will tell you whether runways are open, which airlines are affected, and typical delays. The Federal Aviation Administration also maintains a live status page at faa.gov/air_traffic/publications/status, which shows delays and closures across all major U.S. airports. If you need to speak to someone, call O'Hare's main information line at 773-744-5555.

Key Takeaways

  • O'Hare's official website at flychicago.com shows real-time runway status and current delays.
  • The FAA's status page displays delays and closures for all U.S. airports, including O'Hare, updated every few minutes.
  • Calling O'Hare directly at 773-744-5555 gives you when ready confirmation of whether the airport is operating.
  • Weather closures, mechanical issues, and air traffic control problems are the most common reasons for runway shutdowns.

Check the Chicago Department of Aviation website first

The fastest way to get current information is flychicago.com. The site displays whether O'Hare is open, which runways are in use, and typical gate-to-gate times for departures and arrivals. During winter storms or heavy fog, the site updates every 15 to 30 minutes as conditions change.

Look for a banner or alert box near the top of the page—it will state the current status plainly. If runways are closed, the site explains why (weather, mechanical work, or air traffic delays) and estimates when operations will resume. You can also check individual airline pages on the same site; many carriers post their own delay information.

Use the FAA's National Airspace Status page for independent confirmation

The Federal Aviation Administration maintains a live status page that covers all major U.S. airports. Go to faa.gov/air_traffic/publications/status and search for "Chicago O'Hare" or "ORD." The page refreshes every few minutes and shows whether delays are ground-based (at the airport) or airborne (in the system).

This source is useful because it is independent of the airport itself and often includes information about delays caused by congestion at other airports that affect O'Hare arrivals. If O'Hare is open but flights are delayed, the FAA page will tell you the reason and the expected delay length.

Call O'Hare directly if you need when ready confirmation

If you cannot reach the website or need to speak to someone, call the Chicago Department of Aviation's information line at 773-744-5555. A representative can confirm whether the airport is open, which runways are operating, and typical delays for your airline and time of day.

This line is staffed during all hours. Have your flight number and airline ready if you call, because staff can sometimes look up your specific flight's status. If you are calling from outside the United States, use the same number with the appropriate international dialing code.

Weather is the most common reason for closures

Winter storms, heavy fog, and lightning can force O'Hare to reduce or halt operations. Snow and ice on runways require clearing time, which can delay both departures and arrivals by hours. Fog that reduces visibility below certain minimums may prevent landings on some runways.

During severe weather, the airport may implement a ground stop, meaning no flights can depart until conditions improve. The Chicago Department of Aviation and your airline will both notify passengers of ground stops, but checking the airport status page directly is faster than waiting for an email or text.

Mechanical issues and maintenance can close runways temporarily

O'Hare has four runways, and if one is closed for maintenance or repair, the remaining three can usually handle traffic, though delays may increase. Runway closures are scheduled in advance when possible, but emergency mechanical issues can force unplanned shutdowns.

The airport publishes a maintenance schedule on its website, so if you are planning a trip weeks ahead, you can check whether runway work is scheduled for your travel dates. Real-time mechanical closures appear on the airport status page within minutes of occurring.

Air traffic control delays can affect O'Hare even when runways are open

Sometimes O'Hare's runways are fully operational, but delays still occur because of congestion in the broader air traffic system. Heavy traffic at other major airports, staffing shortages at air traffic control facilities, or weather at connecting hubs can all cause delays that ripple back to Chicago.

The FAA status page distinguishes between ground delays (caused at O'Hare itself) and airborne delays (caused elsewhere in the system). If your flight is delayed but O'Hare shows as open, check the FAA page to see whether the delay is system-wide or specific to your airline.

Frequently Asked Questions

How often does O'Hare close completely?

Full closures are rare and usually last only a few hours during severe winter storms or major mechanical emergencies. Partial closures—where one or two runways close while others remain open—happen more often during weather events or maintenance. Most disruptions are delays rather than closures.

Will my airline notify me if O'Hare closes?

Airlines send notifications to passengers whose flights are affected, but delays in reaching you can occur. Checking the airport status page directly is faster than waiting for an email or text. Most airlines also post updates on their websites and apps.

What time of year does O'Hare close most often?

Winter months (December through February) see the most closures and delays due to snow, ice, and fog. Summer thunderstorms can also cause brief closures. Spring and fall typically have fewer disruptions, though weather remains unpredictable.

Can I check O'Hare's status on my airline's app?

Yes. Most major airlines display airport status and delays in their apps and websites. However, the Chicago Department of Aviation's website and the FAA status page are the most current sources because they update independently of individual carriers.

What should I do if my flight is delayed due to O'Hare closure?

Contact your airline directly—they will rebook you on the next available flight at no charge if the delay is weather-related or due to airport operations. Keep checking the airport status page to see when operations resume, as your airline may move your flight up once delays clear.