AirHint found the following cheapest return flights from Barcelona (BCN) to San Juan (SJU) in August 2026 (see full year).

Return flights

30 Aug - 12 Sep	Iberia
27 Aug - 31 Aug	Iberia
27 Aug - 18 Sep	Iberia
29 Aug - 06 Sep	Iberia
25 Aug - 10 Sep	Iberia
26 Aug - 03 Sep	KLM
26 Aug - 10 Sep	KLM
24 Aug - 12 Sep	Iberia
26 Aug - 07 Sep	Vueling Airlines
24 Aug - 13 Sep	Iberia
18 Aug - 31 Aug	Iberia
24 Aug - 31 Aug	Iberia
17 Aug - 24 Aug	Azores Airlines
24 Aug - 03 Sep	KLM
20 Aug - 27 Aug	United
24 Aug - 30 Aug	Vueling Airlines
24 Aug - 28 Aug	Vueling Airlines
23 Aug - 30 Aug	Azores Airlines
05 Aug - 12 Aug	Iberia
21 Aug - 28 Aug	Iberia

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 $644

Return flights