Cheapest return BCN–SJU flights, September

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

Return flights

18 Sep - 27 Sep United
05 Sep - 13 Sep Lufthansa
14 Sep - 21 Sep Lufthansa
09 Sep - 23 Sep Lufthansa
09 Sep - 16 Sep United
16 Sep - 23 Sep Lufthansa
07 Sep - 13 Sep Lufthansa
14 Sep - 20 Sep Lufthansa
18 Sep - 30 Sep Lufthansa
01 Sep - 09 Sep United
25 Sep - 11 Oct Lufthansa
23 Sep - 03 Oct United
24 Sep - 03 Oct United

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

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