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

Return flights

30 Dec - 20 Jan	Turkish Airlines
29 Dec - 22 Jan	Turkish Airlines
15 Dec - 19 Jan	Air Canada
15 Dec - 24 Dec	Air Canada
09 Dec - 12 Jan	Turkish Airlines
29 Dec - 15 Jan	Turkish Airlines
31 Dec - 21 Jan	Turkish Airlines
28 Dec - 18 Jan	Turkish Airlines
12 Dec - 12 Jan	Turkish Airlines
13 Dec - 09 Jan	Aer Lingus
30 Dec - 09 Jan	Turkish Airlines
02 Dec - 07 Dec	Iberia
03 Dec - 15 Dec	Iberia
12 Dec - 15 Dec	TAP
10 Dec - 17 Dec	Lufthansa
15 Dec - 31 Dec	TAP
17 Dec - 31 Dec	Turkish Airlines
23 Dec - 29 Dec	Turkish Airlines
15 Dec - 29 Dec	TAP

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 1044€

Return flights