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

Return flights

02 Dec - 09 Dec	Ryanair
02 Dec - 27 Jan	Ryanair
02 Dec - 12 Jan	Ryanair
11 Dec - 30 Jan	Ryanair
11 Dec - 27 Jan	Ryanair
29 Dec - 22 Jan	Ryanair
29 Dec - 21 Jan	Ryanair
09 Dec - 18 Jan	Wizz Air
03 Dec - 24 Jan	Lufthansa
02 Dec - 23 Jan	Lufthansa
03 Dec - 23 Jan	Lufthansa
15 Dec - 29 Dec	Lufthansa
22 Dec - 29 Dec	Lufthansa

Also check the deals for one-way flights from Copenhagen 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 Copenhagen to Buenos Aires in December from 941€

Return flights