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

Return flights

06 Dec - 13 Dec	Iberia
06 Dec - 14 Dec	Aer Lingus
07 Dec - 13 Dec	TAP
24 Dec - 23 Jan	Turkish Airlines
01 Dec - 14 Dec	Lufthansa
19 Dec - 14 Jan	Turkish Airlines
15 Dec - 04 Jan	Ryanair
02 Dec - 29 Dec	Lufthansa
23 Dec - 07 Jan	Ryanair
05 Dec - 07 Jan	Air Canada
26 Dec - 06 Jan	Turkish Airlines
31 Dec - 15 Jan	Turkish Airlines
15 Dec - 14 Jan	Turkish Airlines
13 Dec - 24 Jan	Air Canada
23 Dec - 13 Jan	Turkish Airlines
06 Dec - 27 Dec	British Airways
15 Dec - 29 Dec	TAP
14 Dec - 20 Dec	Lufthansa
14 Dec - 29 Dec	British Airways

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 $1238

Return flights