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

Return flights

21 Oct - 29 Oct	Air Canada
07 Oct - 14 Oct	Ryanair
08 Oct - 22 Oct	Aer Lingus
15 Oct - 20 Oct	Aer Lingus
02 Oct - 31 Oct	Ryanair
01 Oct - 26 Oct	Aer Lingus
25 Oct - 09 Nov	Ryanair
05 Oct - 14 Oct	KLM
01 Oct - 10 Oct	Air France
25 Oct - 01 Nov	Air France
23 Oct - 28 Oct	Ryanair
19 Oct - 03 Nov	Air Canada
25 Oct - 10 Nov	Air Canada
08 Oct - 15 Oct	Air Canada
17 Oct - 02 Nov	LATAM Airlines Group
18 Oct - 02 Nov	LATAM Airlines Group
31 Oct - 08 Nov	Air Canada
23 Oct - 08 Nov	SWISS

Also check the deals for one-way flights from Dublin to Buenos Aires in October.

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 October from $1069

Return flights