The cheapest Brussels to Mumbai return flight on the radar right now is €397, flying with Etihad Airways via one or more connections. It covers departures in December 2026, and every dated link below opens that exact BRU–BOM search on Skyscanner. That is roughly 14% below the €460 this route usually costs. Across 112 recorded checks it has ranged between €384 and €624. Our sampling points to December 2026 as the cheapest month to fly Brussels 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 Brussels? 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 Brussels to Mumbai is often still worth booking within a day or two of the fare we found.