It's not really a "never mind" kind of situation. Weather forecasters have dropped the winter snowstorm warnings for some of the Midwest, including Chicago.
On the other hand, there will be freezing rain and wind-gusts up to 35 mph. Icing and wind always affect takeoffs and landings.
And delays are being marked as "excessive" at O'Hare already today. As of 10.30 Central time, about 100 arrivals and departures had been canceled at O'Hare -- nearly all of them by American Eagle or American Airlines, according to Flightstats.com
And in Minneapolis, they're still expecting that winter storm, including heavy snow.
So as always, check ahead before going to the airport. There is no slack in the system. None.