AirHint found the following cheapest one-way flights from Bilbao (BIO) to Barcelona (BCN) in October 2025 (see full year).

One-Way flights

02 Oct	Vueling Airlines	direct
14 Oct	Vueling Airlines	direct
15 Oct	Vueling Airlines	direct
07 Oct	Vueling Airlines	direct
21 Oct	Vueling Airlines	direct
27 Oct	Vueling Airlines	direct
28 Oct	Vueling Airlines	direct
08 Oct	Vueling Airlines	direct
25 Oct	Vueling Airlines	direct
09 Oct	Vueling Airlines	direct

Also check the deals for return flights from Bilbao to Barcelona in October.

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 Barcelona in October from 15€

One-Way flights