Cheapest return flights from Seattle to Sao Paulo in September from 425€

AirHint found the following cheapest return flights from Seattle (SEA) to Sao Paulo (GRU) in September 2025 (see full year).

Return flights

08 Sep - 15 Sep Delta
22 Sep - 29 Sep Delta
28 Sep - 12 Oct Delta
07 Sep - 13 Oct Delta

Also check the deals for one-way flights from Seattle to Sao Paulo in September.

Skyscanner

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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