Flight O'Hare International Airport departs from Chicago O'Hare International Airport at 16:20 and arrives at Amsterdam Amsterdam Airport Schiphol at 07:10.
The flighttime is about 7h 50m. The distance travelled ("as the bird flies"): 10308 Km. So the average speed is roughly 1316 Km.
There is an 7 hour time difference between Chicago and Amsterdam