Cheap flights from Bucharest to Bilbao
Cheapest current fares: $70 in September 2026 on connecting flights.
Cheapest month-by-month fares
Lowest available fare per calendar month from Bucharest (OTP) to Bilbao (BIO). Refreshed daily.
Bucharest (OTP) → Bilbao (BIO)
- September 2026 $70
- August 2026 $139
Frequently asked questions
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What is the cheapest month to fly from Bucharest to Bilbao?
Based on current 6-month forward fare data, September 2026 is the cheapest month to fly from Bucharest (OTP) to Bilbao (BIO), with fares starting from $70.
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What is the lowest current fare from OTP to BIO?
The lowest currently-listed fare from Bucharest (OTP) to Bilbao (BIO) is $70 on 2026-09-08.
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Is there a direct flight from Bucharest to Bilbao?
There is currently no non-stop service from OTP 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.