AirHint found the following cheapest return flights from Foz Do Iguacu (IGU) to Buenos Aires (AEP) in September 2025 (see full year).

Return flights

26 Sep - 04 Oct	JetSmart
26 Sep - 28 Sep	JetSmart
26 Sep - 29 Sep	GOL Linhas Aéreas
30 Sep - 04 Oct	GOL Linhas Aéreas
12 Sep - 22 Sep	GOL Linhas Aéreas
25 Sep - 04 Oct	JetSmart
28 Sep - 18 Oct	JetSmart
25 Sep - 28 Sep	JetSmart
28 Sep - 04 Oct	JetSmart
10 Sep - 23 Sep	GOL Linhas Aéreas
18 Sep - 20 Sep	GOL Linhas Aéreas
12 Sep - 14 Sep	GOL Linhas Aéreas
27 Sep - 29 Sep	GOL Linhas Aéreas
11 Sep - 28 Sep	JetSmart
11 Sep - 25 Sep	JetSmart
26 Sep - 11 Oct	JetSmart
25 Sep - 11 Oct	JetSmart
28 Sep - 11 Oct	JetSmart
18 Sep - 04 Oct	JetSmart
21 Sep - 04 Oct	JetSmart

Also check the deals for one-way flights from Foz Do Iguacu to Buenos Aires in September.

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 Foz Do Iguacu to Buenos Aires in September from 267€

Return flights