- LaGuardia Airport reopened Runway 4/22 on Friday following a two-day closure due to a sudden sinkhole.
- Engineers used ground-penetrating radar to identify and repair structural concerns beneath the pavement surface.
- The Port Authority is investigating a tunneling project as a potential cause for the airfield infrastructure failure.
(NEW YORK, NEW YORK) – LaGuardia Airport reopened Runway 4/22 on Friday after a sinkhole forced a two-day closure during the Memorial Day travel rush, restoring use of one of the airport’s two runways after repairs and inspections.
The Port Authority of New York and New Jersey confirmed the runway had returned to service after crews completed repairs and conducted what the agency called “thorough inspections.” The closure had reduced the airport’s capacity even as LaGuardia Airport itself remained open.
Airport officials first found the sinkhole around 11 a.m. on Wednesday during a daily morning airfield inspection. From that point, the runway stayed shut through a period that typically brings heavier holiday travel demand and tighter operating margins.
Officials had first expected the runway to reopen by Thursday. That estimate then shifted to Friday morning before the Port Authority confirmed on Friday that the runway had reopened.
Crews used ground-penetrating radar to inspect the pavement during the closure, the Port Authority said. That work identified “areas of concern,” and crews then carried out proactive repairs before the runway returned to service.
The agency said its investigation into the cause of the sinkhole remained ongoing on Friday. One possible factor under review was a fuel line tunneling project, according to Port Authority sources.
The two-day shutdown affected a piece of infrastructure that carries an outsized role in daily airport operations because Runway 4/22 is one of only two runways at LaGuardia Airport. Losing access to one runway did not close the airport, but it narrowed the room officials had to manage traffic flow.
That constraint showed up in delays. During the closure, LaGuardia stayed open at reduced capacity, and airport officials told travelers to check flight status with their airlines because residual delays were expected even after the runway reopened.
The sequence of events moved quickly at first, then stretched longer than expected. The sinkhole surfaced during a routine inspection on Wednesday morning, officials moved to close the runway, and early public expectations pointed to a reopening the next day.
Instead, repair and inspection work continued beyond that initial estimate. By the time the Port Authority pushed the expected reopening from Thursday to Friday morning, the delay had already extended the disruption deeper into one of the busiest travel periods of the month.
Friday’s reopening ended the immediate operational problem, but the airport warned that service would not snap back at once. Residual delays were still expected as airlines and air traffic operations worked through the effects of the two-day closure.
The Port Authority’s description of the response offered a limited but clear picture of how crews approached the runway problem. Ground-penetrating radar allowed inspectors to look beneath the pavement surface, locate suspect spots, and target repairs before restoring flight operations.
Officials did not treat the visible hole as an isolated patch job. They widened the inspection to search for additional weak points, then repaired the areas they found before bringing the runway back into use.
That approach also helps explain why reopening estimates changed over time. Once crews began examining the pavement more closely, the work expanded from closing a damaged spot to checking for other structural concerns and addressing them before aircraft could return.
Port Authority officials have not yet assigned a final cause to the sinkhole. The review of a possible link to a fuel line tunneling project places nearby construction activity under scrutiny, but the agency has not closed its investigation.
The timing gave the closure added weight. Memorial Day weekend often compresses flight schedules and airport activity, and any reduction in capacity at a tightly scheduled airport can ripple through arrivals and departures more quickly than during quieter periods.
At LaGuardia Airport, that pressure is sharper because the field operates with only two runways. Closing one does not halt service, but it leaves less flexibility for sequencing aircraft and absorbing interruptions.
Travelers felt that effect in practical terms through delays and changing flight status. Airport officials directed passengers to their airlines for updates, a sign that schedules remained fluid even as repairs progressed and later as the runway returned to service.
By Friday, the main operational milestone had been reached: Runway 4/22 was open again. The investigation now shifts to why the sinkhole formed in the first place and whether the fuel line tunneling project played any role.
That answer will matter beyond this week’s disruption because the closure exposed how quickly a single pavement failure can constrain an airport with limited runway capacity during a holiday rush. For now, LaGuardia has its second runway back, but the Port Authority is still examining what happened beneath it.
