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

Return flights

02 Dec - 16 Dec	British Airways
29 Dec - 19 Jan	Delta
04 Dec - 11 Dec	British Airways
29 Dec - 18 Jan	Delta
28 Dec - 14 Jan	Delta
29 Dec - 16 Jan	Delta
01 Dec - 16 Jan	Delta
10 Dec - 15 Jan	Delta
02 Dec - 29 Dec	Delta
31 Dec - 18 Jan	Delta
08 Dec - 22 Dec	Delta
08 Dec - 28 Dec	Delta
10 Dec - 14 Dec	Air France
23 Dec - 24 Jan	Delta
24 Dec - 24 Jan	Delta
31 Dec - 16 Jan	Delta
08 Dec - 23 Dec	Aer Lingus
17 Dec - 24 Dec	Air France
19 Dec - 29 Dec	Air France
19 Dec - 31 Dec	Air France

Also check the deals for one-way flights from Dublin 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.

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Cheapest return flights from Dublin to Buenos Aires in December from 852€

Return flights