Based on service of KLM / Air France and their partners you may explore incredible Iguazu falls, UNESCO World Heritage Site, located at the borders between Brazil, Paraguay and Argentina. This interesting promotional deal is available from many European countries, if this is a place you wanted to visit this is an attractive solution for most of travelers in Europe. To reach the cheapest fare possible you have to look for return flights departing from Benelux or Italy or an open jaw tickets returning back to UK (London, Manchester, Edinburgh etc.), 
If interested in this Air France / KLM promotional sale please look for flights in travel period between November 2015 till June 2016. Min stay 7 days and max stay 3 months. This promo offer is valid for bookings made till 4th of December 2015 or until sold out.
Travel dates.: Check here directly with the airline as they offer month view.
Booking samples
Brussels - Iguazu Falls for €419 (+€22 fee per booking)
To check your connection possibilities from your home town we recommend to use Skyscanner. This tool gives you quick idea which low-cost airlines are connecting these cities from your home city.
Booking sample of cheap return flights from Europe to Iguazu Falls (Brazil) from £329/€384 here. In this case you would be flying from Luxembourg to iguazu Falls in Brazil on 28th of February 2016 and returning back from South America to Benelux on 11th of March 2016.
