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

Return flights

04 Dec - 11 Dec	Ryanair
02 Dec - 16 Dec	Vueling Airlines
08 Dec - 22 Dec	Aer Lingus
23 Dec - 24 Jan	Turkish Airlines
24 Dec - 24 Jan	Aer Lingus
25 Dec - 30 Jan	Vueling Airlines
12 Dec - 25 Jan	Aer Lingus
31 Dec - 18 Jan	KLM
08 Dec - 23 Dec	Aer Lingus
31 Dec - 16 Jan	Turkish Airlines
29 Dec - 10 Jan	Turkish Airlines
18 Dec - 23 Jan	Ryanair
21 Dec - 24 Jan	Turkish Airlines
29 Dec - 16 Jan	Turkish Airlines
10 Dec - 14 Dec	Lufthansa
02 Dec - 29 Dec	British Airways
19 Dec - 29 Dec	Lufthansa

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 1041€

Return flights