AirHint found the following cheapest return flights from Istanbul (IST) to Buenos Aires (AEP) in December 2025 (see full year).

Return flights

04 Dec - 20 Dec	Turkish Airlines
15 Dec - 15 Jan	Turkish Airlines
12 Dec - 26 Dec	Turkish Airlines
20 Dec - 09 Jan	Turkish Airlines
20 Dec - 02 Jan	Turkish Airlines
14 Dec - 05 Jan	Turkish Airlines
26 Dec - 04 Jan	Turkish Airlines
25 Dec - 04 Jan	Turkish Airlines
25 Dec - 03 Jan	Turkish Airlines
01 Dec - 11 Dec	Vueling Airlines
01 Dec - 10 Dec	Vueling Airlines
19 Dec - 03 Jan	Turkish Airlines
15 Dec - 09 Jan	Turkish Airlines
29 Dec - 12 Jan	Vueling Airlines

Also check the deals for one-way flights from Istanbul 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 Istanbul to Buenos Aires in December from 1242€

Return flights