AirHint found the following cheapest return flights from Chicago (MDW) to Rio De Janeiro (GIG) in August 2025 (see full year).

Return flights

25 Aug - 30 Aug	LATAM Airlines Group
23 Aug - 05 Sep	LATAM Airlines Group
18 Aug - 21 Aug	Frontier Airlines
17 Aug - 20 Aug	Frontier Airlines
16 Aug - 20 Aug	Frontier Airlines
16 Aug - 21 Aug	Frontier Airlines
18 Aug - 20 Aug	LATAM Airlines Group
17 Aug - 21 Aug	Frontier Airlines
20 Aug - 27 Aug	Delta
22 Aug - 07 Sep	Frontier Airlines
22 Aug - 04 Sep	Frontier Airlines
09 Aug - 15 Aug	Frontier Airlines
11 Aug - 15 Aug	Frontier Airlines
20 Aug - 07 Sep	Delta
28 Aug - 06 Sep	Delta

Also check the deals for one-way flights from Chicago to Rio De Janeiro in August.

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 Chicago to Rio De Janeiro in August from 529€

Return flights