Airlines have canceled more than 1,000 flights Wednesday as a late-season winter storm is set to bring blizzard conditions to parts of the Rockies and upper Midwest.
In the storm's crosshairs is Denver, which is a major hub or base for three big carriers: Southwest, United and Frontier.
Nationwide, nearly 1,200 flights had been canceled and another 420 delayed as of 8 a.m. ET, according to flight-tracking service FlightAware.com.
Blizzard conditions and up to a foot of snow were possible by Thursday for Denver and other parts of Colorado.