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As Hurricane Dorian tore through the Bahamas and continued on its uncertain path to the United States, governors in South Carolina and Georgia ordered evacuations and airlines waived fees and penalties for travelers canceling and rescheduling their plans.

More than 580 flights scheduled for Monday were canceled, according to FlightAware, a flight tracking website; 45 cruise sailings across seven cruise lines, including Carnival, Disney, Norwegian, Royal Caribbean, Celebrity, Bahamas Paradise Cruise Line and MSC, were also affected by the hurricane.

Amtrak canceled some trips in the Southeast through Tuesday, and Florida’s governor suspended tolls on the Florida Turnpike, the stretch of Interstate 75 known as Alligator Alley and other highways.

Which airports are closing?

Fort Lauderdale-Hollywood International Airport (FLL) and Orlando Melbourne International Airport (MLB) closed at noon on Monday while Daytona Beach International Airport (DAB) and Orlando International Airport (MCO) will close at 2 a.m. and remain closed on Tuesday. More than 200 flights were canceled into and out of Orlando International Airport, and another 160 were canceled into and out of Fort Lauderdale.