The FAA has directed flights bound for Philadelphia International Airport to delay takeoff from their originating airports because of low cloud cover here.
The "ground delay" is intended to prevent a backup in case flights already en route are slowed in landing because of the weather.
The action is delaying flights an avarage of 20 minutes, the FAA said.
Passengers and those picking up arrivals are advised to check www.phl.org or call 1-800-745 4283 for the latest flight information.
Tips on getting through security checkpoints, what you can carry and how to pack things such as gifts can be found at http://www.tsa.gov/index.shtm