Flight London Gatwick Airport departs from London London Gatwick Airport at 17:50 and arrives at Dusseldorf Düsseldorf Airport at 20:15.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 774 Km. So the average speed is roughly 546 Km.
There is an 1 hour time difference between London and Dusseldorf