Severe weather is expected to bring subzero temperatures the northern Plains as soon as Thursday, then reach the Mississippi Valley, the Northeast and the Ohio Valley by Sunday.

Around 12,000 flights across the U.S. set to take off over the weekend were cancelled as a monster storm started to wreak havoc Saturday across much of the country and threatened to knock out power fo...

Dozens of flights arriving and departing western New York airports have been canceled due to the massive storm.