The cheapest Warsaw to Singapore return flight on the radar right now is €639, flying with Finnair via one or more connections. It covers departures in February 2027, and every dated link below opens that exact WAW–SIN search on Skyscanner. The price we usually record on this route is €655. Across 96 recorded checks it has ranged between €552 and €1,587. Our sampling points to February 2027 as the cheapest month to fly Warsaw to Singapore.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Warsaw? We track 61 other departure cities for Singapore, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Warsaw to Singapore is often still worth booking within a day or two of the fare we found.