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

Return flights

25 Mar - 07 Apr	Avianca
12 Mar - 23 Mar	Avianca
03 Mar - 15 Mar	Avianca
13 Mar - 15 Mar	Avianca
20 Mar - 22 Mar	Avianca
04 Mar - 15 Mar	Copa
17 Mar - 28 Mar	Copa
19 Mar - 30 Mar	Copa
16 Mar - 23 Mar	Copa
25 Mar - 01 Apr	Copa
27 Mar - 07 Apr	Avianca
05 Mar - 15 Mar	United	direct
06 Mar - 15 Mar	United
27 Mar - 06 Apr	Delta
26 Mar - 06 Apr	Delta

Also check the deals for one-way flights from Washington 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.

Book a cheap hotel in Sao Paulo

Cheap car rent in Sao Paulo

Cheapest return flights from Washington to Sao Paulo in March from 497€

Return flights