AirHint found the following cheapest return flights from London (LON) to Bilbao (BIO) in May 2026 (see full year).

Return flights

08 May - 11 May	Norwegian
15 May - 18 May	Air Europa
14 May - 18 May	Air Europa
15 May - 17 May	Air Europa
19 May - 26 May	Iberia
19 May - 24 May	Iberia
19 May - 22 May	Iberia
20 May - 25 May	Iberia
18 May - 24 May	Air Europa
27 May - 31 May	Iberia

Also check the deals for one-way flights from London to Bilbao in May.

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 return flights from London to Bilbao in May from 117€

Return flights