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

Return flights

01 Dec - 07 Dec	LATAM Airlines Group
01 Dec - 10 Dec	LATAM Airlines Group
03 Dec - 08 Dec	Lufthansa
02 Dec - 10 Dec	LATAM Airlines Group
01 Dec - 16 Dec	Lufthansa
25 Dec - 01 Jan	Lufthansa
28 Dec - 10 Jan	Lufthansa
25 Dec - 11 Jan	Lufthansa
13 Dec - 30 Dec	SKY express
22 Dec - 29 Dec	Ryanair
18 Dec - 06 Jan	Ryanair
04 Dec - 04 Jan	Lufthansa
18 Dec - 08 Jan	Ryanair
17 Dec - 24 Dec	SWISS
20 Dec - 10 Jan	ITA Airways
20 Dec - 09 Jan	Pegasus Airlines
19 Dec - 02 Jan	SKY express
30 Dec - 12 Jan	Lufthansa
18 Dec - 28 Dec	Vueling Airlines
18 Dec - 27 Dec	SWISS

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Athens to Buenos Aires in December from 846€

Return flights