It was an early morning for me! Got up at 4 am Eastern time for the 7 am Pittsburgh to Chicago flight. On the way there I took a wrong turn and swung by Pittsburgh downtown – instead of taking the more direct route to the airport. The airport was very busy with check-in crowds even at 5.30am; it must have been all the travelers that could not get out on Friday.
There was still lots of snow on the ground in Chicago, but the runways at the airport were clear. The ground crews are well-equipped to handle snow, though : about 20 trucks with snow plows were lined up on the side of the runway.