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

Return flights

22 Sep - 29 Sep	Delta
20 Sep - 04 Oct	Delta
22 Sep - 23 Oct	Delta
23 Sep - 27 Oct	Delta
20 Sep - 10 Oct	Delta
23 Sep - 10 Oct	Delta
23 Sep - 14 Oct	Delta
22 Sep - 24 Sep	Delta
26 Sep - 10 Oct	Delta
23 Sep - 25 Oct	Delta
19 Sep - 10 Oct	Delta
23 Sep - 09 Oct	Ryanair
18 Sep - 24 Sep	Delta
18 Sep - 21 Sep	Delta
21 Sep - 28 Sep	Ryanair
23 Sep - 30 Sep	Air France

Also check the deals for one-way flights from Dublin 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 Dublin to Buenos Aires in September from $1034

Return flights