Major airlines in the United States said Tuesday that they would add flights at airports across the Northeast, ramping up operations after a powerful winter storm caused thousands of flights to be canceled.

As of early Tuesday, more than 2,000 flights to and from U.S. airports had been canceled, down from more than 5,700 on Monday, according to FlightAware. At least 50% of scheduled flights departing Boston Logan International Airport on Tuesday have been canceled. At Newark Liberty International Airport in New Jersey and LaGuardia Airport in New York City, 49% of departures have been canceled, while at Kennedy Airport in New York City, 41% have been canceled.

Nearly 23 inches of snow fell at LaGuardia Airport during the storm, according to the National Weather Service, and nearly 17 inches in Boston.

American Airlines said operations at Philadelphia International and Ronald Reagan Washington National airports had resumed Monday and that it planned to restart operations in Boston and New York on Tuesday morning. United and Delta also said they planned to add flights Tuesday.

“Delta teams are in close contact with local airport authorities as they focus on significant snow removal, and we will safely resume flights once weather and airport conditions allow,” the airline said in a statement.

With snowy conditions across the Eastern Seaboard, delays and cancellations could persist for days. All of the major U.S. airlines, including American, Delta, JetBlue, Southwest and United, have issued travel waivers to allow passengers to change their flights without fees.

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This article originally appeared in The New York Times.

By Ceylan Yeğinsu/Dakota Santiago
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