The city's Aviation Department reports there are no "substantial" delays at O'Hare International Airport or Midway Airport as of 3:30 p.m.
But Hurricane Sandy has caused the cancellation of more than 450 flights at O'Hare and more than 100 flights at Midway, the city said.
Travelers should check airlines' web sites for flight status.Want more? Discuss this article and others on RedEye's Facebook page.