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

Return flights

03 Dec - 12 Dec	Lufthansa
04 Dec - 12 Dec	Lufthansa
02 Dec - 16 Dec	Iberia
01 Dec - 15 Dec	LATAM Airlines Group
01 Dec - 10 Dec	LATAM Airlines Group
02 Dec - 31 Jan	Iberia
25 Dec - 07 Jan	Vueling Airlines
27 Dec - 11 Jan	Vueling Airlines
10 Dec - 18 Dec	Lufthansa
26 Dec - 08 Jan	Vueling Airlines
25 Dec - 03 Jan	Vueling Airlines
25 Dec - 10 Jan	Vueling Airlines
22 Dec - 03 Jan	Vueling Airlines
21 Dec - 04 Jan	Vueling Airlines
15 Dec - 22 Dec	Iberia
11 Dec - 19 Dec	Iberia
10 Dec - 19 Dec	Iberia
19 Dec - 04 Jan	Vueling Airlines
21 Dec - 13 Jan	Iberia
20 Dec - 30 Dec	LATAM Airlines Group

Also check the deals for one-way flights from Athens 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 Athens to Buenos Aires in December from $1381

Return flights