Midway Airport
Heathrow is slightly closer but there are good transport links to/from both of them.
Chicago is closer to Texas because Philadelphia is farther to the east than Chicago is.
The Atlantic Ocean is closer to Chicago.
Chicago is closer to the Atlantic Ocean
Chicago.
Seattle, WA is much closer to Canada than Chicago, IL is to Canada.
Ronald Regan National Airport
Fort Lauderdale
O'Hare Airport is the closest big airport. There are small airports that are closer. Waukegan Airport is close.
Ohio Is Closer To Detroit :)
The Los Angeles airport (LAX) is the closest major airport. Oxnard Airport is closer if you have your own plane.