More than 2,800 flights canceled amid US storm

More than 2,800 flights into, out of or across the U.S. have been canceled and about 4,800 have been delayed due to the large storm system moving through the Midwest.

Flight-tracking service FlightAware showed that of the 2,855 cancellations, more than 1,600 were at Chicago's two main airports. Dallas/Fort Worth International Airport saw 365 cancellations; several tornadoes touched down Saturday in the Dallas suburbs.

FlightAware reports 4,779 flights were delayed.

A typical day sees about 150 cancelations and 4,000 delays.

Heavy rain and strong winds, seen Monday in parts of Missouri, Illinois and Arkansas, are often more troubling for airlines than snowfall.

Photo Caption: A load of gravel is dumped in an effort to hold back rising floodwater, Monday, Dec. 28, 2015, in Kimmswick, Mo. Missouri Gov. Jay Nixon has declared a state of emergency due to widespread flooding around the state that has closed many roads. (AP Photo/Jeff Roberson)