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

Return flights

10 Sep - 17 Sep	Delta
04 Sep - 17 Sep	Delta
10 Sep - 16 Sep	Ethiopian Airlines
15 Sep - 15 Oct	Delta
11 Sep - 18 Sep	Delta
19 Sep - 23 Sep	Ethiopian Airlines
24 Sep - 07 Oct	Ethiopian Airlines
05 Sep - 08 Sep	Delta
05 Sep - 07 Sep	Delta
24 Sep - 06 Oct	Delta
22 Sep - 03 Oct	Wizz Air Malta
07 Sep - 14 Sep	ITA Airways
26 Sep - 04 Oct	Ryanair
19 Sep - 25 Sep	Ethiopian Airlines
06 Sep - 20 Sep	Delta
29 Sep - 03 Oct	Air France

Also check the deals for one-way flights from Athens to Buenos Aires in September.

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 September from $875

Return flights