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

Return flights

15 Sep - 21 Sep	Delta
16 Sep - 29 Sep	Delta
16 Sep - 07 Oct	Delta
17 Sep - 24 Sep	Delta
16 Sep - 23 Sep	Delta
25 Sep - 15 Oct	Delta
25 Sep - 21 Oct	Delta
16 Sep - 21 Sep	Delta
22 Sep - 24 Sep	Delta
22 Sep - 29 Sep	Delta
15 Sep - 12 Oct	Delta
15 Sep - 11 Oct	Delta
18 Sep - 25 Sep	Delta
20 Sep - 28 Oct	Delta
17 Sep - 08 Oct	Ryanair
27 Sep - 11 Oct	Transavia France
24 Sep - 25 Sep	Delta
27 Sep - 04 Oct	Transavia France
21 Sep - 02 Oct	Delta
29 Sep - 30 Sep	Ryanair

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 873€

Return flights