AirHint found the following cheapest return flights from Sao Paulo (GRU) to San Juan (SJU) in May 2026 (see full year).

Return flights

22 May - 31 May	Arajet
24 May - 31 May	Arajet
03 May - 10 May	Arajet
03 May - 12 May	Arajet
01 May - 10 May	Arajet
14 May - 27 May	Copa
23 May - 08 Jun	Copa
01 May - 17 May	GOL Linhas Aéreas
14 May - 18 May	GOL Linhas Aéreas
11 May - 19 May	GOL Linhas Aéreas
01 May - 08 May	GOL Linhas Aéreas
31 May - 04 Jun	Arajet
29 May - 06 Jun	Copa

Also check the deals for one-way flights from Sao Paulo to San Juan in May.

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 Sao Paulo to San Juan in May from $349

Return flights