While we're dealing with a major drop in temperatures we're also being treated to lots of wind and enough snow to really slow things down.

The growing number of flight delays and cancellations at Chicago's O'Hare and Midway airports this morning are piling like the the snow on the runways.

CBS-2 Chicago (8:36am):

Chicago’s airports are canceling flights amid winter weather on Thursday.

Chicago areas are under a Winter Weather Advisory through lunchtime Thursday. The advisory will remain in effect longer in Northwest Indiana due to lake effect snow.

As of 8:35 a.m. Thursday, 164 flights had been canceled at O’Hare International Airport and average delays are over 66 minutes.

At Midway Airport, 11 flights have been canceled and average delays are over 15 minutes.