This is slightly strange: the best onward flight to Havana is Aeroflot 150, which departed Moscow SVO 30 minutes ago. This makes Snowden's layover in Moscow likely to be over 20 hours, so one must wonder if he plans to stay there a while.

http://flightaware.com/live/findflight/UUEE/MUHA/

If he will indeed fly HK-Moscow-Havana-Caracas without delay, he may finish with flight V04101 on Monday at 23:50 Venezuela time (21:20 California time).