Current promotional deal of KLM offers to book the flights till 30th of June and from 17th of August till 30th of September 2015. (date of your outbound flight to Caribbean). Min stay 7 days and max stay 1 month. . As the weather is consistently nice all the year at Aruba, Bonaire or Curacao, low and peak seasons reflects actual climates in Europe rather than on the island itself. Taking the advantage of this offer you can expect less crowded beaches and cheaper accommodation. To compare some affordable hotel rooms in Caribbean you may use our tool here.
Booking samples
UK - Aruba/Bonaire/Curacao from £377
Italy - Aruba/Bonaire/Curacao from €534
Switzerland - Aruba/Bonaire/Curacao from €529
Dusseldorf - Curacao from €459 (one travel date, based on Air Berlin)
Germany - Aruba/Bonaire/Curacao from €566
Amsterdam - Aruba/Bonaire/Curacao from €468 (based on ArkeFly)
NL - Brussels - Aruba/Bonaire/Curacao from €438 (+€22 booking fee)
DE - Brussels - Aruba/Bonaire/Curacao from €426
Travel dates are easiest to check directly with KLM.
Booking sample of cheap return flights to Aruba, Bonaire or Curacao for €426 here. In this case you would be departing from Brussels to Bonaire on 16th of May and returning from Caribbean back to Europe on 27th of May 2015.