Sinkhole forces LaGuardia Airport runway closure, stranding thousands across the Northeast

 May 21, 2026

A sinkhole near one of LaGuardia Airport's two runways forced an immediate shutdown Wednesday morning, cutting the New York City hub's capacity in half and triggering nearly 200 flight cancellations before a severe thunderstorm watch compounded the chaos.

Port Authority of New York and New Jersey crews spotted the cavity near Runway 4/22 around 11 a.m. during a routine daily sweep of the airfield, the Daily Caller reported. Officials shut the runway down on the spot. Emergency construction and engineering teams rushed to the scene to size up the damage, investigate the cause, and begin repairs.

With Runway 4/22 offline, every takeoff and landing at LaGuardia funneled onto the airport's only other strip, Runway 13/31. By mid-afternoon, arriving flights faced average ground delays of 98 minutes. FlightAware logged 197 cancellations and 168 delays in and out of the airport.

One runway, one region, and a long afternoon

LaGuardia operates with just two runways, a thin margin for one of the busiest airports in the country. Losing half that capacity on a Wednesday, peak midweek travel, meant the pain radiated well beyond Queens. The closure disrupted air travel across the Northeast.

The Federal Aviation Administration planned to keep Runway 4/22 closed until at least 6 a.m. Thursday, according to ABC News. Breitbart reported that the FAA recorded average departure delays of roughly 105 minutes, while airlines warned travelers to brace for additional cancellations.

LaGuardia Airport posted a statement on X confirming the discovery and the emergency response. The airport's message was blunt about what passengers should expect.

Fox News reported that LaGuardia said in its statement:

"The runway was immediately shut down, and emergency construction and engineering crews are onsite to determine the cause and complete necessary repairs as quickly and safely as possible."

A Port Authority spokesperson, quoted by the New York Post, warned travelers directly:

"Travelers should expect delays and cancellations, particularly with forecast thunderstorms expected later today, and are strongly encouraged to check directly with their airlines for the latest flight status information."

Thunderstorms pile on

As if a sinkhole weren't enough, a Severe Thunderstorm Watch blanketed New York City, Long Island, New Jersey, and parts of Connecticut from 2 p.m. to 9 p.m. Eastern. Fox 5 New York reported the watch, and the timing could hardly have been worse, stacking weather delays on top of an already crippled operation.

Whether the storms directly worsened the sinkhole-related backlog remains unclear. But for passengers already stranded or rerouted, the distinction was academic. Some travelers reported detours, missed connections, and hours-long waits, the New York Post noted.

The disruption at LaGuardia is the latest in a string of incidents rattling confidence in the nation's airport infrastructure. Just weeks ago, smoke forced the evacuation of an air traffic control tower at Newark Airport, triggering a full ground stop at that facility.

Same runway, darker history

Runway 4/22 carries its own recent, grim history. On March 22, Air Canada Flight 8646 struck a Port Authority fire truck on the same strip. Both pilots died, and dozens were injured, Newsweek reported. Engineers were still evaluating the sinkhole's size, cause, and whether it posed any structural threat to the runway, questions that take on added weight given that earlier tragedy.

Air traffic control audio captured the moment of discovery Wednesday. ABC News, citing ATC.com, aired an exchange in which a ground controller told a pilot plainly: "There's a sinkhole."

No injuries were tied to Wednesday's sinkhole. That is the one piece of good news. But the fact that Port Authority crews found it during a routine sweep raises an obvious question: what if they hadn't?

Kit Deason, a passenger at LaGuardia, told the New York Post she was thinking along similar lines.

"Lately, with all the mishaps and near misses at major airports, I'm thankful they found it before a plane went into it."

It is a low bar, gratitude that a hole in the ground was spotted before an aircraft rolled over it. But given the state of American aviation infrastructure, it is apparently the bar we're working with.

A pattern, not an anomaly

The LaGuardia sinkhole did not appear in isolation. A separate sinkhole opened on the Long Island Expressway on May 14, just six days earlier. Engineers had not yet publicly identified the cause of the runway cavity. Whether the two events share a geological connection remains an open question.

Airports across the country have faced a drumbeat of disruptions in recent months. A bomb squad responded to a suspicious object near Tampa's airport earlier this year, and F-16s intercepted a civilian aircraft over Washington after a restricted-airspace violation. Each incident is different. Together, they sketch a picture of systems under strain.

The sinkhole's exact dimensions have not been disclosed. Its cause remains under evaluation. Whether Runway 4/22 will reopen on the FAA's projected 6 a.m. Thursday timeline, or face a longer closure, is uncertain.

What is certain is the cost. Nearly 200 canceled flights. Delays averaging more than an hour and a half. Thousands of passengers rerouted, stranded, or left checking their phones for updates that didn't come.

And all of it at an airport that, just two months earlier, was the site of a fatal crash on the very same runway.

America's airports keep making headlines, and not the kind that inspire confidence. Travelers shouldn't have to feel lucky that someone noticed the ground was caving in before a plane taxied over it.

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