Cheap flights from Sofia to Singapore from only €371 roundtrip with Air France & KLM!
EUBook cheap high season Business Class (Awarded as the world's best by both Skytrax and Tripadvisor) flights from Sofia, Bulgaria to Singapore or Thailand from only €1243 return!
LOT Polish Airlines are running a sale from multiple European cities to Singapore! Book tickets starting at only €370 for a round trip!