SOF → BIO
Cheap flights from Sofia to Bilbao
We track fares from Sofia to Bilbao, Spain every day. Across 52 prices we've logged, the cheapest was €86 return and a typical fare runs around €126. The cheapest month to fly is usually Oct 2026.
Cheapest seen
€86
Typical price
€126
Cheapest month
Oct 2026
Non-stop
With a stop
No live deal on this exact route right now — but the typical fare is around €126. Search your dates below, or browse all deals to Spain.
Cheapest months to fly
The typical cheapest fare by month, from our tracking — a guide only. Check the live price on Aviasales before booking.
| Month | Typical from | Check price |
|---|---|---|
| Sept 2026 | €126 | Check on Aviasales → |
| Oct 2026 | €86 | Check on Aviasales → |
Each link opens the live Aviasales search for that month, where you can pick the exact cheapest dates.
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Sofia to Bilbao: the basics
- Route
- Sofia (SOF) → Bilbao (BIO)
- Distance
- 2,133 km
- Non-stop
- No (with a stop)
- Airlines seen
- Air Serbia, RR, Wizz Air
Planning the trip? Spain: what to see and when to go covers where to go and when.
Where these flights connect
There is no non-stop flight from Sofia to Bilbao. Based on the airlines that fly this route, connections are usually through Belgrade — worth checking when you compare fares.