If interested you may find such a cheap open-jaw flights to South America in limited quantity and travel possibilities when departing to Brazil, Argentina, Chile, Bolivia, Colombia or Peru within November and till 7th of December 2015 and in January, February, March and April 2016. (flights in 2016 seems to be bookable only when you return back to Germany). This promotional offer is valid for bookings made till 8th of May 2015 but most likely will be fixed anytime soon. To book some affordable hotel room in South America you may compare your accommodation here.
To book the cheapest flights to South American countries available please look for flights departing from Barcelona to Brazil (Sao Paulo, Rio de Janeiro, Brasilia, Iguazu Falls), Paraguay (Ciudad del Este and Asuncion)
Booking samples
Barcelona - Sao Paulo and Rio de Janeiro/Brasilia etc. - London from £301
Barcelona - Brazil and Uruguay - London for £337
Barcelona - Brazil and Argentina - London for £358
! Barcelona - Paraguay - London for £299
Barcelona - Paraguay - Germany for €508
Barcelona - Brazil - Germany for €421
To check your connection possibilities we recommend to use Skyscanner. This tool gives you quickly an idea which low-cost airlines are calling Barcelona, Frankfurt or London from your home city.
Booking sample of cheap flights from Europe to South America (and possible error fare air tickets) in this case to remote Paraguay for £299 here. In this case you would be departing from Barcelona to Ciudad del Este (Iguazu Falls) on 9th of November. Your return flight from Asuncion, capital of Paraguay back to London would take place on 22nd of November 2015.