AirHint found the following cheapest return flights from Barcelona (BCN) to San Juan (SJU) in August 2025 (see full year).

Return flights

28 Aug - 04 Sep	Air Europa
28 Aug - 08 Sep	Air Europa
30 Aug - 07 Sep	United
27 Aug - 31 Aug	Lufthansa
28 Aug - 31 Aug	Air Europa
25 Aug - 30 Aug	Iberia
24 Aug - 30 Aug	Air Europa
24 Aug - 31 Aug	Air Europa
24 Aug - 28 Aug	Air Europa

Also check the deals for one-way flights from Barcelona to San Juan in August.

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 Barcelona to San Juan in August from $835

Return flights