More than half of flights were canceled at Washington, DC's Reagan National Airport on Monday, according to data from FlightAware ... Republican House Speaker Mike Johnson told Fox News that ...

The extreme weather is being caused by the polar vortex, an area of cold air that circulates around the Arctic.

Advertisement Nearly 1,500 flights have been canceled into or out of the United States, according to the tracking website FlightAware ... House Speaker Mike Johnson implored his congressional ...

As of early Monday morning, 1,400 US flights had been cancelled for the day and 800 delayed, according to FlightAware.com ... But Republican House Speaker Mike Johnson said the weather would ...

Nationwide, over 60 million people were under some sort of weather alert, according to broadcaster CNN, while air traffic monitoring site FlightAware ... House Speaker Mike Johnson said on Fox ...

according to the website FlightAware said. The accident occurred about half a mile from the Fullerton airport, according to the FAA, which identified the plane as a single-engine Van's RV-10.

Nationwide, over 60 million people were under some sort of weather alert, according to broadcaster CNN, while air traffic monitoring site FlightAware ... House Speaker Mike Johnson said on Fox ...