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According to the Port Authority, 453 flights were cancelled at LaGuardia, 119 flights at John F. Kennedy International Airport, and 335 flights at Newark Liberty International Airport.

Those flying are still being encouraged to call their airline carrier ahead of the flight.

"Now I'm going to travel to Kennedy to see if I can get a flight from Kennedy to Montreal," said one airline passenger at LaGuardia this morning.

"My flight was originally 7 o'clock. They called me that the flight was delayed, cancelled actually for 9 o'clock," said another. "Then, it was delayed t0 9:50 a.m., and now it's 10:50 a.m."

"We are on time," said a third. "I feel great."

While it is not reporting any major delays, New York City Transit says commuters should leave themselves some extra time for their travels.

NYC Transit is running a full rush-hour schedule of subway and bus service, but with some delays, especially on the bus side.

Service on the L, A, and S trains has resumed with residual delays following earlier switch problems.

Switch problems on the G train at the 4th Avenue station in Brooklyn continues to cause delays.

Due to the inclement weather, there is no 7 express service.

MetroNorth also warns that riders should expect delays of up to 30 minutes on the New Haven Line and delays of up to 15 minutes on the Hudson and Harlem lines throughout the day.

Long Island Rail Road is experiencing delays of 10 to 15 minutes.

Long-haul ground carriers like Greyhound and Peter Pan bus lines have canceled service into and out of New York.

For those hitting the roads, alternate-side parking has been suspended through Tuesday.