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

Return flights

01 Dec - 08 Dec	ITA Airways
01 Dec - 07 Dec	Ryanair
01 Dec - 12 Dec	Ryanair
01 Dec - 15 Dec	Ryanair
30 Dec - 29 Jan	Ryanair
06 Dec - 14 Dec	Ryanair
08 Dec - 14 Dec	Ryanair
08 Dec - 19 Jan	Wizz Air UK
12 Dec - 16 Dec	ITA Airways
20 Dec - 20 Jan	Ryanair
23 Dec - 18 Jan	Aegean Airlines
09 Dec - 28 Dec	Aegean Airlines
19 Dec - 30 Jan	Aegean Airlines
25 Dec - 14 Jan	ITA Airways
24 Dec - 13 Jan	SKY express
25 Dec - 31 Dec	SWISS
25 Dec - 12 Jan	ITA Airways
16 Dec - 10 Jan	Ryanair
23 Dec - 10 Jan	Ryanair
20 Dec - 30 Dec	Ryanair

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 853€

Return flights