As the Category 4 storm cut a swath through the Bahamas and pounded the southeastern seaboard, airports in the region began closing as part of pattern that likely will ripple along the East Coast.
As of about 12:05 a.m. ET. Tuesday, 1,484 flights into and out of the U.S. had been canceled and 3,964 had been delayed, according to listings on Flight Aware.
Among the U.S. airports that had shuttered completely were Fort Lauderdale-Hollywood International Airport, which is listed as closed until Tuesday at noon. Palm Beach International Airport is also closed until Tuesday.
Orlando Intenational Airport plans to cease its operations at 2 a.m. ET Tuesday, according to a notice on its Twitter account.
The 242 departures canceled at Fort Lauderdale represented 63% of the facility’s total. Orlando Sanford cut 28% of its flights.
Miami International Airport remained open, but the airport warned travelers to check with airlines as some flights in and out of the area may be canceled.
According to local media reports, Freeport-Grand Bahama International Airport is currently under several feet of water.
This story originally appeared on www.cnbc.com