What is the cheapest month to fly from Sofia to Bilbao?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Sofia (SOF) to Bilbao (BIO), with fares starting from $122.

What is the lowest current fare from SOF to BIO?

The lowest currently-listed fare from Sofia (SOF) to Bilbao (BIO) is $122 on 2026-08-25.

Is there a direct flight from Sofia to Bilbao?

There is currently no non-stop service from SOF to BIO. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Sofia to Bilbao

Cheapest current fares: $122 in August 2026 on connecting flights.

Last updated May 22, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Sofia (SOF) to Bilbao (BIO). Refreshed daily.

Sofia (SOF) → Bilbao (BIO)

August 2026 $122

Frequently asked questions

What is the cheapest month to fly from Sofia to Bilbao?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Sofia (SOF) to Bilbao (BIO), with fares starting from $122.
What is the lowest current fare from SOF to BIO?

The lowest currently-listed fare from Sofia (SOF) to Bilbao (BIO) is $122 on 2026-08-25.
Is there a direct flight from Sofia to Bilbao?

There is currently no non-stop service from SOF to BIO. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.