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

Return flights

05 Mar - 11 Mar	Iberia
02 Mar - 08 Mar	Iberia
02 Mar - 16 Mar	Iberia
16 Mar - 22 Mar	Iberia
14 Mar - 17 Mar	Iberia
19 Mar - 22 Mar	Iberia
31 Mar - 11 Apr	Vueling Airlines
26 Mar - 10 Apr	Vueling Airlines

Also check the deals for one-way flights from Bilbao to San Juan in March.

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 Bilbao to San Juan in March from $525

Return flights