The cheapest Sofia to Cairo return flight on the radar right now is €227, flying with TAROM via one or more connections. It covers departures in July 2027, and every dated link below opens that exact SOF–CAI search on Skyscanner. That is roughly 17% below the €275 this route usually costs. Across 99 recorded checks it has ranged between €203 and €596. Our sampling points to July 2027 as the cheapest month to fly Sofia to Cairo.
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 62 other departure cities for Cairo, 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 Cairo is often still worth booking within a day or two of the fare we found.