Cheapest return SFO–GRU flights, May

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

Return flights

19 May - 26 May Frontier Airlines
12 May - 26 May Frontier Airlines
12 May - 28 May Frontier Airlines
04 May - 20 May United
11 May - 27 May Copa
26 May - 10 Jun Copa
31 May - 04 Jun United
03 May - 24 May Copa
25 May - 08 Jun Frontier Airlines
29 May - 07 Jun Frontier Airlines
29 May - 05 Jun Copa
29 May - 06 Jun Copa
26 May - 08 Jun Alaska Airlines
09 May - 30 May Frontier Airlines
04 May - 22 May GOL Linhas Aéreas
08 May - 20 May GOL Linhas Aéreas
03 May - 10 May Copa
14 May - 03 Jun Frontier Airlines
23 May - 19 Jun Frontier Airlines

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

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