The tarmac of LaGuardia airport is pictured through a window on the day before Thanksgiving, in New York

The tarmac of LaGuardia airport is pictured through a window on the day before Thanksgiving, in New York

The tarmac of LaGuardia airport is pictured through a window on the day before Thanksgiving, in New York November 26, 2014. A storm expected to blast the East Coast with rain and snow through Thursday morning is threatening to snarl traffic for millions and impede air travel ahead of the Thanksgiving holiday. More than 800 flights into and around the United States were canceled on Wednesday, while more than 1,000 were delayed, according to tracking website FlightAware.com. REUTERS/Carlo Allegri (UNITED STATES – Tags: TRANSPORT SOCIETY TRAVEL)