Vueling have a summer promotion where you can fly from many European cities to Rome, Italy from just €29 roundtrip. For example, fly from Munich, Germany to Rome, Italy for only €29 roundtrip.
Amazingly cheap flights from Boston, USA to Palma de Mallorca, Malaga, Madrid or Barcelona, Spain from only $296 roundtrip. Also works in reverse (from €271 roundtrip).
Error Fare flights from Malaga, Spain to Beijing, China for only €292 roundtrip with British Airways. Possible to end your trip in London, UK.
Very cheap flights from Los Angeles, USA to Malaga, Madrid, Barcelona or Palma de Mallorca, Spain from only $373 roundtrip. Also works in reverse (from €336 roundtrip).
Fly from Spain or Portugal to Nairobi, Kenya from only €308 roundtrip with British Airways.
Error Fare Business Class flights from many Spanish cities to San Jose, Costa Rica from only €695 roundtrip with British Airways.
Very cheap flights from many European cities to New York, USA from only €284 roundtrip with TAP Portugal.
Cheap flights from New York, USA to Malaga, Spain for only $354 roundtrip. Also works in reverse for €315 roundtrip.
Cheap non-stop flights from Madrid or Malaga, Spain to Montreal, Canada from only €316 roundtrip.