Nearly every scenario of Snowden flying out of Moscow could lead to his apprehension.
• Hannah Allam and Matt Schofield / McClatchy WashinAviation experts say that even if Snowden accepts the tentative offers of Venezuela, Nicaragua or Bolivia to give him shelter, it's virtually impossible to chart a flight plan to those nations that doesn't include traveling over or refueling in a U.S
One of those Russian billionaires could do it in their private jets bound for Aruba with an unscheduled stop in Caracas. But it would look funny going there before the start of tourist season in December or flying around Sweden and Norway rather than asking permission to fly over. Or Putin 1. But it could be done with a fly to the northwest before bending back over the Atlantic ocean for a direct to Caracas. There are some planes that could fly the 7,000 miles nonstop.
http://www.reuters.com/article/2013/07/12/us-usa-security-flights-options-analysis-idUSBRE96B0A820130712