Hi
I would postpone it if I was you. My parents were meant to be flying out of NYC tonight at 6.30pm. But the flight was eventually cancelled after they sat on the runway for 4 and a half hours! They don't know when they will get to fly home and apparently all those people (kids) included who don't have accommodation are sleeping at the airport on blankets. If I was you I would postpone your trip!
Good luck anyway!
A
Flights leaving NYC