AirHint found the following cheapest one-way flights from Bilbao (BIO) to Sofia (SOF) in July 2025 (see full year).

One-Way flights

16 Jul	Vueling Airlines
29 Jul	Wizz Air
15 Jul	Wizz Air
18 Jul	Vueling Airlines
26 Jul	Vueling Airlines
11 Jul	Volotea
25 Jul	Wizz Air Malta
09 Jul	Vueling Airlines
22 Jul	Vueling Airlines
31 Jul	Iberia

Also check the deals for return flights from Bilbao to Sofia in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from Bilbao to Sofia in July from $130

One-Way flights