RDU flights returning to normal after disruption caused by Northeast snowstorm

More than 635 flights were grounded before the end of Monday and more were likely as airlines tried to restart their operations. Since making it in and out of the Northeast in the next few days may be problematic, here's what you should do if your flight is cancelled.

More than 8,600 flights were cancelled nationwide, with 6,227 of said flights being cancelled on Tuesday alone.

Delta Air Lines has canceled more than 900 flights in advance of a major winter storm approaching the northeast.

Almost 3,000 flights were canceled Tuesday at Kennedy, LaGuardia and Newark Liberty airports, according to the Port Authority, which operates those airports. Poor weather could extend into early Wednesday at some New England airports.

As o.m., FlightAware reports 762 flights have been canceled for Wednesday. The markets affected include New York City, Newark, Boston, Washington D.C, Philadelphia and Baltimore. "Some customers opted to rebook their flights and go home, but for those that made a decision to stay, we brought customers doughnuts, sandwiches and salads and offered them the Care While Waiting snack carts".

Crews at the airport were working steadily Tuesday to keep the runways clear.

Other worldwide airlines will also be affected (whether by strike or by the weather). Newark-Liberty International averages 1,200 flights a day; 1,015 were canceled according to CNBC. More than 190 Wednesday flights are already off the books, mostly at Washington National, Baltimore/Washington, Boston Logan and Chicago Midway airports. Stella is expected to impact travel from eastern Wisconsin to the Atlantic, and rain and snow is forecasted to cause delays, road closures, school closures, and cancellations from North Carolina into ME, covering a distance of more than 1,000 miles. Twitter users can also receive automated updates by tweeting their flight number @BDLFlightInfo. Four months ago, airport officials listed Salt Lake City as one of nine top markets they planned to target for new service. Passengers going to Kennedy can get the AirTrain at Jamaica transit hub, but LaGuardia's only mass transit is the public bus system, which was experiencing storm-related delays Wednesday morning.

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