The cheapest Warsaw to Mumbai return flight on the radar right now is €397, flying with British Airways via one or more connections. It covers departures in January 2027, and every dated link below opens that exact WAW–BOM search on Skyscanner. That is roughly 22% below the €511 this route usually costs. Across 100 recorded checks it has ranged between €386 and €581. Our sampling points to January 2027 as the cheapest month to fly Warsaw to Mumbai.
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 59 other departure cities for Mumbai, 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 Mumbai is often still worth booking within a day or two of the fare we found.