How Long Do Ground Stops Last?
Most ground stops last 15 to 90 minutes and are extended in short increments. The recovery period — the time for the departure queue to clear — usually lasts longer than the stop itself, often two to six hours at a hub.
Typical durations
Ground stops are deliberately short because they are re-evaluated frequently. A weather cell moves, a runway reopens, staffing recovers — the order is lifted or extended in increments. That is why the published end time is an estimate, not a promise.
| Type | Typical duration | What drives the end |
|---|---|---|
| Single-airport weather stop | 15–60 minutes | Storm cell clearing the arrival path |
| Volume stop at a hub | 30–90 minutes | Demand dropping below capacity |
| Equipment or runway stop | 1–4 hours | Repair or runway reopening |
| Nationwide stop | 2–6 hours | System-level cause, such as an outage |
The recovery queue is the real delay
When the stop lifts, every held flight wants the same departure window. ATC sequences them by original schedule and slot, then airlines swap crews and aircraft to protect connections. The result is a second wave of delays that is often longer than the stop.
At a large hub, a two-hour stop can produce four to six hours of residual delay. At a smaller airport with fewer based aircraft, recovery is usually under two hours.
Why some stops keep getting extended
- The cause has not cleared. Convective weather that keeps rebuilding over the arrival corridor.
- Staffing has not recovered. ATC staffing shortages can outlast the weather that exposed them.
- Demand keeps rebuilding. Airlines re-file and the queue never drains.
- A runway stays closed. Reduced runway capacity caps the arrival rate for hours.
The long tail: nationwide events
Nationwide stops are rare and are usually tied to a system failure rather than weather. The January 11, 2023 NOTAM system outage produced the first nationwide ground stop since 2001; the order was lifted the same morning, but cancellations and delays persisted for the rest of the day. September 11, 2001 is the extreme case: US airspace was closed for days.
Our archive records every event we observe with start time, end time, duration and airport count. Because the FAA does not publish a queryable history, that archive is the only way to answer 'how long did the last one actually last' with data.
Sources
FAQ
Do ground stops have a maximum length?
No formal maximum. They are re-issued in increments, so a stop can run for hours if the underlying cause persists.
Is it safe to rebook immediately?
Wait for the recovery picture. Rebooking to a flight that is also in the queue can leave you worse off than staying on the original flight.
How long after a stop should I expect normal operations?
At a hub, plan on several hours of residual delay. At a smaller airport, usually one to two hours.
Do longer stops mean more compensation?
Not in the US, where delay compensation is not mandated. In the EU and UK, arrival delay over three hours can trigger compensation if the cause is not extraordinary.