Planes were still flying in and out of Logan International Airport early Friday afternoon, but only a few more arrivals and departures are expected, said Matthew Brelis, spokesman for the Massachusetts Port Authority, which runs Logan.
The snowplows were set to make their first sweep of the airfield to keep at least one runway open.
By 4 p.m., no more scheduled flights will be coming in and out of Boston, and the current expectation is that airline service will resume Saturday afternoon, Brelis said.
Across the Northeast, airlines have canceled more than 4,000 flights on Friday and Saturday, according to the flight-tracking website FlightAware.
Earlier in the day, the airport was bustling with people relieved to be getting in, and out, before the snow hits.
Lori Jacobson of Mashpee was among the lucky ones able to rebook her Saturday trip to San Juan, Puerto Rico, to Friday at 1 p.m.
Jacobson, an emergency room nurse at Cape Cod Hospital, was headed for a Caribbean cruise with her 17-year-old daughter and a few coworkers. Her sister-in-law drove them into the airport and was planning to stay at Jacobson’s house to watch the her dogs.
“We’re deserting everybody: dogs, patients,” Jacobson said with a laugh, noting that the temperature in the Caribbean was in the 80s. “I’m going to put a cold cocktail in my hands.”
The last Logan Express buses will arrive at the airport at 3 p.m. and leave at 4 p.m., Brelis said, but the public areas and some concessions will remain open in the terminals.
“We’re going to keep two runways as long as we can then we go down to one runway,” he said. “While snow is being removed from the one active runway, planes need to go into a holding pattern. That doesn’t mean we’re closed, but if they’re low on fuel they might get diverted.”