Denver International Airport canceled 263 of flights on Tuesday and there were more than 100 cancellations Wednesday, according to FlightAware.
The tracking website said more than 2,000 flights had been delayed in the United States by midday Wednesday, after nearly 5,000 a day earlier. Overall, 662 flights were scrapped on Tuesday.
This Thanksgiving holiday travel period is expected to be one of the busiest in U.S. history — with Dec. 3 forecast to be the single busiest air travel day ever.
A “bomb cyclone” in the western United States is responsible for harsh weather conditions that have influenced air travel, including heavy snow, rain and powerful wind gusts. Forecasters said the storm “could be historic in its strength and scope.” It produced a record low sea level pressure when it came ashore in northern California and southern Oregon Tuesday.
The National Weather Service said a strong low-tracking storm will make its way across the Great Lakes Wednesday before slamming the New England region by nightfall.
“Given the tight pressure gradient with this low-pressure system, very windy conditions are likely across much of the Midwest and Ohio Valley region where winds could gust in excess of 50 mph at times,” the NWS advisory said, warning residents to expect significant travel disruptions.
