Cheapest return ORD–GRU flights, May

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

Return flights

31 May - 14 Jun Frontier Airlines
27 May - 03 Jun Air Canada
23 May - 18 Jun Frontier Airlines
31 May - 04 Jun Air Canada
30 May - 13 Jun Frontier Airlines
18 May - 21 May Aeromexico
18 May - 22 May Aeromexico
27 May - 31 May Volaris
23 May - 25 May Air Canada
18 May - 24 May Arajet
21 May - 25 May jetBlue
18 May - 20 May GOL Linhas Aéreas
18 May - 23 May Aeromexico
31 May - 04 Jun United direct
17 May - 22 May Frontier Airlines
27 May - 31 May United direct
27 May - 03 Jun United direct
30 May - 13 Jun United direct
23 May - 18 Jun United direct

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

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