Weather forces flight cancellations in Chicago

Weather is causing delays and hundreds of cancellations at Chicago's international airports almost a week after sabotage at a suburban air traffic control center disrupted travel nationwide.

The Chicago Department of Aviation said Thursday that 450 flights were canceled at O'Hare and 300 flights were canceled at Midway, including all Southwest Airlines flights.

Officials say Thursday's cancellations are a result of approaching storms and lingering effects of the sabotage.

Last Friday, a contract worker set fire to communications equipment at an Aurora control center, causing more than 2,000 canceled flights.

Chicago Mayor Rahm Emanuel said Wednesday that the Federal Aviation Administration must "work harder and better and smarter" to restore normal airport operations.

The FAA says technicians are working around-the-clock, and the center should be operational by Oct. 13.