Flight José Marti International Airport departs from Havana José Marti International Airport at 14:25 and arrives at Moscow Sheremetyevo International Airport at 09:00.
The flighttime is about 11h 35m. The distance travelled ("as the bird flies"): 13448 Km. So the average speed is roughly 1161 Km.
There is an 7 hour time difference between Havana and Moscow