TV monitors at Logan International Airport in Boston show cancelled flights Friday morning, Feb. 8, 2013. Boston and much of eastern Massachusetts was under a blizzard warning until 1 p.m. Saturday. Logan International Airport said it would try to stay open during the storm but airlines had already canceled many flights through Saturday. (AP Photo/Gene J. Puskar) (Gene J. Puskar/AP)

“Airlines are just being cautious,” said airport spokeswoman Kimberly Gibbs. “They don’t want to bring planes into an area where they might not be able to get out.”

She said terminals at both airports were relatively quiet.

At Baltimore-Washington International Marshall Airport, snow crews were on high alert and had been since late Tuesday. But so far, despite predictions of snow, only rain was falling. Airport spokesman Jonathan Dean said there had been some flight cancellations, but some travelers were still able to depart.

According to the Web site, 326 departures out of Reagan National, 279 out of Washington Dulles and 93 out of BWI had been canceled. Nationwide, more than 1,900 flights had been canceled.