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

Return flights

02 Dec - 10 Dec	LATAM Airlines Group
02 Dec - 09 Dec	LATAM Airlines Group
06 Dec - 13 Dec	LATAM Airlines Group
01 Dec - 09 Dec	Pegasus Airlines
02 Dec - 11 Dec	Wizz Air UK
07 Dec - 08 Dec	Aegean Airlines
15 Dec - 25 Jan	Pegasus Airlines
05 Dec - 07 Dec	Aegean Airlines
21 Dec - 30 Jan	Pegasus Airlines
21 Dec - 29 Jan	Pegasus Airlines
23 Dec - 20 Jan	AJet
11 Dec - 18 Dec	LATAM Airlines Group
24 Dec - 21 Jan	Pegasus Airlines
15 Dec - 21 Dec	Turkish Airlines
22 Dec - 23 Jan	Turkish Airlines
15 Dec - 23 Dec	Air Europa
15 Dec - 19 Jan	Pegasus Airlines
18 Dec - 26 Jan	Air Cairo
24 Dec - 20 Jan	AJet
14 Dec - 19 Jan	Pegasus 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 844€

Return flights