Flight Warsaw Chopin Airport departs from Warsaw Warsaw Chopin Airport at 14:40 and arrives at St. Petersburg Pulkovo Airport Saint Petersburg at 17:35.
The flighttime is about 1h 55m. The distance travelled ("as the bird flies"): 1285 Km. So the average speed is roughly 670 Km.
There is an 1 hour time difference between Warsaw and St. Petersburg