United did ground flights, but only during specific incidents

United Airlines has issued ground stops at various points, most notably in July 2024 when a global technology outage affected multiple airlines simultaneously. During that event, United grounded flights for several hours while systems came back online. However, United does not regularly ground its entire fleet — when you hear about a "ground stop," it usually means flights are temporarily halted at specific airports or nationwide for a few hours, not that every plane is permanently stuck on the tarmac.

A ground stop is different from a cancellation. When United issues a ground stop, it means no planes can take off from affected airports until the issue is resolved. Planes already in the air land normally. Once the ground stop lifts, flights resume, though delays and cancellations often follow because the backlog of waiting aircraft is large.

If you were booked on a United flight during a ground stop, you have the right to rebook on another United flight at no extra cost, or to receive a refund if you choose not to fly. United is required by the U.S. Department of Transportation to offer these options.

Key Takeaways

  • A ground stop halts takeoffs temporarily but does not mean planes are permanently grounded or the airline has shut down.
  • Ground stops usually last a few hours and affect specific airports or the entire country depending on the cause.
  • If your flight is affected, you can rebook on another United flight or request a refund without penalty.
  • The most recent major United ground stop was during the July 2024 technology outage that affected multiple airlines.
  • Delays and cancellations often continue for hours after a ground stop lifts because of the backlog of aircraft waiting to depart.

What causes United to issue a ground stop

Ground stops happen for a few specific reasons. A technology outage — like the one in July 2024 — can disable the systems United needs to process flight plans, check weather, or communicate with air traffic control. When those systems go down, the airline cannot safely dispatch planes, so it stops all departures until systems are restored.

Weather is another common cause. If severe thunderstorms, heavy snow, or other dangerous conditions affect a major hub like Chicago or Houston, United may ground flights there to protect passenger safety. Air traffic control can also issue a ground stop if an airport becomes too congested or if there is a safety issue on the ground.

Mechanical problems at a specific airport — such as a runway closure or equipment failure — can trigger a ground stop for that location only. A nationwide ground stop is rarer and usually tied to a system failure or a directive from the Federal Aviation Administration.

How long ground stops typically last

Most ground stops last between one and four hours. During the July 2024 outage, United and other airlines were grounded for roughly two to three hours before systems came back online and flights resumed. However, the real disruption extends much longer because of the backlog.

Once a ground stop lifts, United does not when ready return to normal operations. Hundreds of planes are waiting to take off, so the airline works through them in priority order — usually flights that were scheduled to depart first get priority, along with any flights that are already delayed. This backlog can cause delays for the rest of the day or even into the next day.

Your rights when United grounds flights

If your flight is cancelled or significantly delayed because of a ground stop, you have options under U.S. Department of Transportation rules. You can rebook on the next available United flight to your destination at no extra charge. If no United flight works for you, you can ask United to book you on a competitor airline, though United is not required to pay for a premium cabin or a significantly more expensive ticket.

You can also request a full refund of your ticket price if you decide not to fly. This applies whether the ground stop was caused by a system failure, weather, or another reason. United cannot charge you a change fee or require you to accept a travel credit instead of a refund.

If your flight is delayed more than three hours on arrival, you may be may have access to to compensation under Department of Transportation rules, though there are exceptions for weather and certain other circumstances. Check the DOT website or contact United directly to understand whether your specific delay qualifies.

How to track whether United has issued a ground stop

The fastest way to know if United has grounded flights is to check the FAA's website directly. The Federal Aviation Administration maintains a real-time list of ground stops and delays at faa.gov under the "Delays and Cancellations" section. This page updates every few minutes and shows which airports are affected and why.

United's own website and mobile app also display ground stops and their status. If you are booked on a United flight, the app will notify you of delays or cancellations. You can also call United at 1-800-864-8331 to speak with a representative, though wait times are often long during widespread disruptions.

News outlets and aviation tracking sites like FlightAware also report major ground stops in real time. If you are concerned about a flight, checking one of these sources before heading to the airport can save you a wasted trip.

What to do if your United flight is grounded

First, do not go to the airport until you have confirmed that your flight is actually cancelled or significantly delayed. During a ground stop, United may resume operations within a few hours, so your flight might still depart — just later than scheduled.

Contact United through the app, website, or phone line to rebook if your flight is cancelled. If you are already at the airport, go to the United ticket counter. Have your confirmation number and ID ready. If United cannot rebook you on another flight that works for your schedule, ask about a refund.

Keep your boarding pass and any receipts for expenses you incur — such as meals or a hotel room if you are stranded overnight. If you paid out of pocket for these costs, you may be able to claim them as part of a complaint to the Department of Transportation, though reimbursement is not may provide.

Frequently Asked Questions

Does a ground stop mean all United flights everywhere are cancelled?

No. A ground stop usually affects a specific airport or region. A nationwide ground stop is rare and typically caused by a system failure or FAA directive. Even during a nationwide ground stop, flights already in the air continue normally — only new departures are halted.

Can I get a refund if United grounds my flight?

Yes. If your flight is cancelled because of a ground stop, you can request a full refund of your ticket price. You can also rebook on another United flight at no extra cost. United cannot require you to accept a travel credit instead of a refund.

Will I be compensated for a delay caused by a ground stop?

Compensation depends on the cause and the length of the delay. If your flight arrives more than three hours late and the ground stop was not caused by weather or a safety emergency, you may be may have access to to compensation. Contact the Department of Transportation or United to determine whether your delay qualifies.

How do I know if United has grounded flights before I go to the airport?

Check the FAA website at faa.gov under "Delays and Cancellations," or use United's app or website. Both update in real time. You can also call United at 1-800-864-8331, though wait times are long during widespread disruptions.

What should I do if I am stuck at the airport during a ground stop?

Stay in contact with United through the app or by calling the airline. Do not leave the airport unless you are certain your flight is cancelled. If your flight is cancelled, go to the ticket counter to rebook or request a refund. Keep receipts for any meals or hotel costs you incur.