With Winter Storm Jonas prompting blizzard warnings for several Northeast cities, airlines on Thursday canceled nearly 2,000 Friday flights as a precaution. The storm was expected to bring heavy snowfall to at least 15 states, with ice, strong winds and flooding possibly grounding flights through the weekend.

Travelers in cities such as New York City, Philadelphia, Baltimore and Washington, D.C., may see flight plans affected. Most of the 1,950 flights that have been canceled are domestic, according to flight tracking site Flight Aware.



Here are the latest advisories from airlines across the country:

American Airlines announced that travel schedules may be interrupted at Clinton National Airport (LIT) in Little Rock, Arkansas; Louisville International Airport (SDF) in Kentucky; Memphis International Airport (MEM) in Tennessee; and Nashville International Airport (BNA), also in Tennessee.

Delta Airlines listed more than 35 airports that will be affected by the storm between Friday and Sunday. "If your flight is canceled or significantly delayed, you are entitled to a refund," said a statement from the airline, which added that flights must be rebooked before next Wednesday.

Frontier Airlines alerted travelers that flights may be affected due to the "expected operational impact from an approaching winter weather system." Eighteen Saturday flights were canceled as of Thursday evening, with travel affected at the following airports: Philadelphia; Trenton-Mercer in New Jersey; LaGuardia Airport in New York City; Dulles and Reagan National airports in Washington; and Charlotte, Raleigh-Durham and Greensboro airports in North Carolina. 

JetBlue said travel from Saturday to Sunday may be affected at airports in Boston; Hartford, Connecticut; New  York City; Newark, New Jersey; Providence, Rhode Island; Westchester County, New York; and Worcester, Massachusetts.

United Airlines’ advisory informs travelers that more than 35 cities will be affected from Friday to Sunday. “The change fee and any difference in fare will be waived for new flights departing on or before Jan. 20-27, 2016, as long as travel is rescheduled in the same cabin (any fare class) and between the same cities as originally ticketed,” the advisory said.

For a full list of live delays and cancellations, go to Flight Aware.