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

Return flights

09 Mar - 16 Mar	United	direct
11 Mar - 18 Mar	United	direct
16 Mar - 23 Mar	United	direct
17 Mar - 24 Mar	United	direct
04 Mar - 12 Mar	Copa
02 Mar - 09 Mar	Copa
03 Mar - 10 Mar	Copa
04 Mar - 11 Mar	Copa
05 Mar - 12 Mar	Copa
10 Mar - 17 Mar	Copa
25 Mar - 01 Apr	United	direct
31 Mar - 07 Apr	United
28 Mar - 04 Apr	United	direct
29 Mar - 05 Apr	United	direct
01 Mar - 15 Apr	United
26 Mar - 02 Apr	United	direct
30 Mar - 06 Apr	United	direct
27 Mar - 03 Apr	United

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 $475

Return flights