Tropical Storm Irene is causing problems for travelers in Chicago.
Officials at both of the city's airports said about 250 flights were canceled on Sunday mostly due to weather conditions on the East Coast. That's about 200 flights at O'Hare International Airport and about 50 at Midway International Airport.
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Chicago's Department of Aviation says there aren't any delays.
Airports on the East Coast are reeling from the storm and some remain closed.
Weather officials downgraded Irene from a hurricane to a tropical storm Sunday as the storm's winds lost speed.
As a hurricane, Irene had already unloaded more than a foot of water on North Carolina, spun off tornadoes in Virginia, Maryland and Delaware, and left 4 million homes and businesses without power. At least 11 people have been killed.