Based on charter airlines Arkefly you may consider to visit amazing Caribbean isle Sint Maarten during classic tourist season. Explore this beautiful island famous also for its legendary Maho Beach. The cheapest return flights are now starting already at €399. (+€15 booking fee). To reach such a low fare you would have to depart from Amsterdam. 
If interested please look for flights in travel dates within November and December 2015. This is based on date of your outbound flight to Caribbean. Below you may find booking sample.
Booking sample
Amsterdam - Sint Maarten from €399 (+€15 booking fee)
To check your connection possibilities we recommend to use service of Skyscanner. This tool gives you quickly an idea which airlines are available from your home town. To check some affordable accommodation you may consider booking servers Venere or Hotelopia.
Booking sample of cheap return flights from Amsterdam to Sint Maarten for €399 here. In this case you would be departing from Amsterdam to this exotic Caribbean isle on 25th of November 2015. Your return flight from Sint Maarten back to Europe would take place on 6th of December 2015.
