Airlines canceled thousands of flights and issued waivers, as travel disruptions from a major Northeast blizzard rippled across the U.S. Friday. Some Amtrak train service was also halted as the storm could leave record amounts of snow, according to forecasters. (Read more: 'Dangerous' Snowstorm Nemo Finds the Northeast)
Airlines have canceled more than 4,200 flights on Friday and Saturday due to the blizzard, according to flight-tracking website FlightAware.com.
Airlines generally shut down operations Friday afternoon at the three big New York-area airports as well as Boston, Providence, Portland, Maine, and other Northeastern airports. They were hoping to resume flights on Saturday.
The blizzard snarled air travel in Canada, too, with 240 flights canceled on Friday at Pearson International Airport in Toronto.