"See actual flight paths with flightpaths.com"
Weather, politics and local regulations can affect the choice of airspace and flight corridors. Flightpaths.com lets you see the real flight paths and compare passenger airlines and flight times simplified on an interactive map.
Flights from Chicago (ORD), USA to Madrid (MAD), Spain illustrated on a map. Based on 6 recorded flights, the distance can vary between 4279 and 4637 miles.
Canada
Portugal
Spain
Over water
Spain
Over water
Portugal
Canada
You can also check the reverse route: Madrid to Chicago