Flight Adolfo Suárez Madrid–Barajas Airport departs from Madrid Adolfo Suárez Madrid–Barajas Airport at 11:35 and arrives at Chicago O'Hare International Airport at 14:20.
The flighttime is about 9h 45m. The distance travelled ("as the bird flies"): 9378 Km. So the average speed is roughly 962 Km.
There is an 7 hour time difference between Madrid and Chicago