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

Return flights

24 Apr - 27 Apr	Iberia
11 Apr - 17 Apr	Iberia
23 Apr - 26 Apr	SWISS
17 Apr - 19 Apr	Iberia
29 Apr - 05 May	Iberia
05 Apr - 09 Apr	Lufthansa
04 Apr - 08 Apr	Lufthansa
19 Apr - 22 Apr	Iberia
18 Apr - 21 Apr	Iberia
11 Apr - 14 Apr	Iberia
24 Apr - 26 Apr	Iberia
25 Apr - 04 May	Iberia
30 Apr - 04 May	SWISS
30 Apr - 05 May	SWISS

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

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.

Book a cheap hotel in Bilbao

Cheap car rent in Bilbao

Cheapest return flights from London to Bilbao in April from 179€

Return flights