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

Return flights

21 Apr - 28 Apr	Iberia
08 Apr - 16 Apr	Iberia
19 Apr - 28 Apr	Iberia
20 Apr - 28 Apr	Iberia
15 Apr - 22 Apr	Lufthansa
15 Apr - 24 Apr	Lufthansa
21 Apr - 29 Apr	Iberia
21 Apr - 01 May	Iberia
22 Apr - 29 Apr	Iberia
08 Apr - 17 Apr	Iberia
22 Apr - 01 May	Iberia
20 Apr - 27 Apr	Iberia
24 Apr - 01 May	Iberia
22 Apr - 02 May	Iberia
26 Apr - 03 May	Iberia
26 Apr - 04 May	Iberia
27 Apr - 04 May	Iberia
23 Apr - 01 May	Iberia
28 Apr - 06 May	Iberia
28 Apr - 07 May	Iberia

Also check the deals for one-way flights from San Juan 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.

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Cheapest return flights from San Juan to Bilbao in April from $425

Return flights