Officials also warned additional cancellations were possible and told travelers to call ahead before heading to the airport. Affected customers may receive refunds or rebook their flights.
JetBlue's problems began Wednesday when its operations at New York's John F. Kennedy International Airport were overwhelmed by the snow and ice storm.
In Colorado yesterday, thousands of motorists, including travelers heading to ski areas for the holiday weekend, were stuck in giant traffic jams as highway crews worked to remove snow that slid across mountain roads.
The storm, which had moved out of the state yesterday, piled up as much as 18 inches of snow in the mountains. It also blasted the metropolitan area with winds as high as 100 miles per hour .
One avalanche at Berthoud Pass on Highway 40, the main road to the Winter Park ski resort, knocked a state maintenance vehicle off the road during the night, said Stacey Stegman, Colorado Department of Transportation spokeswoman. The pass reopened yesterday afternoon.
Elsewhere, avalanche crews firing explosive charges to break up potential avalanches dislodged a massive slide that buried Interstate 70, the main access road from Denver and the urban Front Range corridor to many of the state's major ski resorts .
By the time officials reopened I-70 shortly after 10 a.m., the traffic jam extended east for 10 miles, Stegman said.
At Denver International Airport, officials were baffled yesterday by cracks that formed in the windshields of 12 airliners during the storm , airport spokesman Steve Snyder said.
Investigators had found no evidence of wind-blown debris that could have caused the cracks, Snyder said.