Airlines cancel more than 800 flights Friday at Chicago airports amid frigid conditions

CHICAGO (CBS) -- A winter storm hit the Chicago area and frigid conditions Friday morning are causing airlines to cancel flights at O'Hare and Midway Airports.   

As of 8 p.m. Friday, 555 flights were canceled at O'Hare International Airport. 

At Midway International Airport, 315 flights were canceled.

Check back for flight cancellation updates.

More than 800 flights were canceled Thursday at Chicago airports as the winter storm arrived.