Cheapest return IST–GRU flights, September

AirHint found the following cheapest return flights from Istanbul (IST) to Sao Paulo (GRU) in September 2026 (see full year).

Return flights

17 Sep - 30 Sep KLM
16 Sep - 30 Sep KLM
01 Sep - 30 Sep KLM
06 Sep - 14 Sep Air Europa
11 Sep - 23 Sep Air France
11 Sep - 19 Sep Air Europa
21 Sep - 20 Oct Air Europa
14 Sep - 26 Sep Air Europa
13 Sep - 29 Sep KLM
15 Sep - 30 Sep KLM
18 Sep - 30 Sep KLM
15 Sep - 15 Oct Air Europa
15 Sep - 15 Oct Turkish Airlines direct
21 Sep - 20 Oct Turkish Airlines direct

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

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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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