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

Return flights

01 Dec - 06 Dec	JetSmart
18 Dec - 27 Dec	JetSmart
18 Dec - 28 Dec	JetSmart
18 Dec - 07 Jan	JetSmart
14 Dec - 27 Dec	JetSmart
14 Dec - 28 Dec	JetSmart
18 Dec - 02 Jan	JetSmart
08 Dec - 27 Dec	JetSmart
08 Dec - 28 Dec	JetSmart
18 Dec - 03 Jan	JetSmart
14 Dec - 02 Jan	JetSmart
14 Dec - 03 Jan	JetSmart
29 Dec - 07 Jan	JetSmart
29 Dec - 02 Jan	JetSmart
29 Dec - 03 Jan	JetSmart
28 Dec - 07 Jan	JetSmart
28 Dec - 02 Jan	JetSmart
01 Dec - 14 Dec	JetSmart
08 Dec - 14 Dec	JetSmart
01 Dec - 13 Dec	JetSmart

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

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 December from 254€

Return flights