Cheapest return flights from Chicago to Sao Paulo in September from 602€

AirHint found the following cheapest return flights from Chicago (MDW) to Sao Paulo (GRU) in September 2025 (see full year).

Return flights

29 Sep - 06 Oct Frontier Airlines
19 Sep - 22 Sep Frontier Airlines
18 Sep - 21 Sep Frontier Airlines
26 Sep - 11 Oct Frontier Airlines
27 Sep - 18 Oct Delta
24 Sep - 01 Oct LATAM Airlines Group
18 Sep - 02 Oct Delta

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

Skyscanner

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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