LaGuardia Runway Closure Due to Sinkhole Disrupts Hundreds of Flights

LaGuardia Airport experienced significant disruptions on May 21, 2026, when a sinkhole discovered on Runway 4/22 forced its closure. This event, combined with severe thunderstorms, led to over 400 flight cancellations and delays, reducing the airport’s operational capacity by half. The incident highlights how quickly a single infrastructure issue can impact air travel at a major hub.

Discovery and Immediate Impact

The sinkhole was found during a routine morning inspection of Runway 4/22 around 11 a.m. Port Authority crews immediately closed the runway to assess and begin repairs. This closure significantly impacted LaGuardia’s operations, as the airport relies on its two main runways to manage its tightly scheduled traffic.

The Federal Aviation Administration (FAA) responded by slowing arrivals into LaGuardia, citing both the weather and the runway issue. This led to widespread flight disruptions, with FlightAware reporting 197 cancellations and 168 delays by mid-afternoon on Wednesday. The average departure delays stretched to 98 minutes, causing considerable inconvenience for passengers.

Widespread Flight Disruptions

Delta Air Lines was among the carriers most affected, with FlightAware noting over 90 cancellations and more than 400 delays for the airline alone. The loss of one of LaGuardia’s primary runways meant that all departures and arrivals had to be funneled through the remaining runway. This constraint, coupled with ongoing thunderstorms in the region, amplified the delays and cancellations.

The situation demonstrated how weather and airfield problems can combine to magnify travel disruptions. A storm system can slow air traffic on its own, but a runway shutdown at the same time can turn minor delays into widespread cancellations and long taxi times. These issues then create ripple effects that extend across airline schedules throughout the day.

Repair Efforts and Expected Timeline

Port Authority officials worked to repair the damaged runway, with the goal of reopening Runway 4/22 by 6 a.m. ET on Thursday, May 22, 2026, weather permitting. This timeline meant that airlines and passengers would face hours of constrained operations even after the initial afternoon disruptions had passed. The airport’s ability to handle traffic was essentially cut in half until repairs were completed.

Passengers were advised to check directly with their airlines for the most up-to-date flight status information before traveling to the airport. The incident served as a stark reminder of the delicate balance of operations at busy airports and how quickly a single infrastructure failure can reshape travel plans for hundreds, if not thousands, of people.

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