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

Return flights

01 Mar - 10 Mar	Copa
01 Mar - 03 Mar	Copa
05 Mar - 12 Mar	Copa
16 Mar - 24 Mar	Copa
02 Mar - 09 Mar	Copa
03 Mar - 10 Mar	Copa
04 Mar - 11 Mar	Copa
09 Mar - 16 Mar	Copa
10 Mar - 17 Mar	Copa
11 Mar - 18 Mar	Copa
10 Mar - 10 Apr	Copa
09 Mar - 09 Apr	Copa
31 Mar - 10 Apr	Copa
31 Mar - 07 Apr	Copa
30 Mar - 06 Apr	Copa
25 Mar - 06 Apr	Copa
24 Mar - 06 Apr	Copa
08 Mar - 08 Apr	United	direct
25 Mar - 01 Apr	United	direct
31 Mar - 07 Apr	United	direct

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

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 Sao Paulo in March from $438

Return flights