Saint Barthélemy
There are also charters to St. Barths from San Juan, Puerto Rico available through Tradewind Aviation.  The current mayor's airline, called St. Barths Commuter, offers non-prohibitive cost one-way/roundtrip travel between both of St. Maarten's airports and St. Barths.  It is also an excellent service for charters.  A favorite island business for an extra fee is via St. Barths Services, as they offer full-service attention.