Cheapest return flights from Chicago to Sao Paulo in December from 539€

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

Return flights

08 Dec - 19 Jan Arajet
13 Dec - 21 Jan Spirit Airlines
15 Dec - 20 Jan Frontier Airlines
05 Dec - 10 Dec Spirit Airlines
16 Dec - 20 Jan Frontier Airlines
24 Dec - 14 Jan Spirit Airlines
02 Dec - 09 Dec Spirit Airlines
11 Dec - 15 Dec Frontier Airlines
24 Dec - 11 Jan Frontier Airlines
04 Dec - 13 Dec Frontier Airlines
12 Dec - 11 Jan Frontier Airlines
15 Dec - 10 Jan Spirit Airlines
17 Dec - 28 Dec Spirit Airlines
14 Dec - 17 Dec Frontier Airlines
17 Dec - 29 Dec Spirit Airlines
15 Dec - 06 Jan Spirit Airlines
13 Dec - 06 Jan Frontier Airlines
20 Dec - 29 Dec Frontier Airlines
16 Dec - 18 Dec Spirit Airlines
17 Dec - 28 Dec United direct

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

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