More than 1,800 US flights canceled as massive March storm disrupts travel

More than 1,800 flights within, into or out of the United States had been canceled as of 7 a.m. ET Monday as a massive weather system disrupted air travel across parts of the country, forcing the Federal Aviation Administration to impose ground stops at major airports including Atlanta and Charlotte while Houston faced lengthy delays, according to FlightAware and FAA data.

More than 1,200 additional delays involving U.S. flights were also recorded, the data showed.

The disruptions come during the busy spring break travel season ...