The cheapest Sofia to Singapore return flight on the radar right now is €554, flying with British Airways via one or more connections. It covers departures in January 2027, and every dated link below opens that exact SOF–SIN search on Skyscanner. That is roughly 19% below the €681 this route usually costs. Across 77 recorded checks it has ranged between €522 and €804. Our sampling points to January 2027 as the cheapest month to fly Sofia to Singapore.
Every fare here is re-confirmed against Skyscanner automatically, and each one is stamped with the moment it was last checked, so you can see how fresh it is instead of taking it on trust. Not flying from Sofia? We track 60 other departure cities for Singapore, listed at the foot of this page.
Fares move quickly. If this Sofia to Singapore price has gone by the time you search, shift the dates a day or two either side, because the same route is often still cheap just next door.