The cheapest Sofia to Delhi return flight on the radar right now is €598, flying with Bulgaria Air + Gulf Air + Aegean Airlines via one or more connections. It covers departures in November 2026, and every dated link below opens that exact SOF–DEL search on Skyscanner. The price we usually record on this route is €610. Across 91 recorded checks it has ranged between €380 and €705. Our sampling points to November 2026 as the cheapest month to fly Sofia to Delhi.
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 Sofia? We track 63 other departure cities for Delhi, 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 Sofia to Delhi is often still worth booking within a day or two of the fare we found.