Flight Pulkovo Airport Saint Petersburg departs from St. Petersburg Pulkovo Airport Saint Petersburg at 08:30 and arrives at Dusseldorf Düsseldorf Airport at 10:20.
The flighttime is about 2h 50m. The distance travelled ("as the bird flies"): 2760 Km. So the average speed is roughly 974 Km.
There is an 1 hour time difference between St. Petersburg and Dusseldorf