Flight Zvartnots International Airport departs from Yerevan Zvartnots International Airport at 00:15 and arrives at Moscow Sheremetyevo International Airport at 02:30.
The flighttime is about 3h 15m. The distance travelled ("as the bird flies"): 1536 Km. So the average speed is roughly 473 Km.
There is an 1 hour time difference between Yerevan and Moscow