More than 40 million Americans under winter storm warnings or weather advisories as heavy snow expected.

JetBlue Airways has canceled 225 flights, the most among the carriers.

Up to nine inches (23cm) of snow could fall across the New York region during one of the busiest travel weekends of the year.

Winter Storm Devin is slowing travel in the Great Lakes and Northeast, while torrential rain and localized flooding are impacting California.

More than 40 million Americans under winter storm warnings or weather advisories as heavy snow expected.

At least 1,500 flights were canceled from Friday night into Saturday, according to flight-tracking service FlightAware.

BOSTON: More than a thousand flights were canceled or delayed across the Northeast and Great Lakes regions due to snow as thousands took to US roads and airports during the busy…