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

Return flights

03 Dec - 10 Dec	Ryanair
08 Dec - 14 Dec	Transavia France
15 Dec - 20 Jan	Finnair
23 Dec - 23 Jan	Ryanair
26 Dec - 17 Jan	Ryanair
13 Dec - 23 Dec	Ryanair
27 Dec - 17 Jan	Wizz Air Malta
10 Dec - 30 Dec	Ryanair
25 Dec - 19 Jan	TAP
10 Dec - 31 Dec	Ryanair
09 Dec - 30 Dec	Wizz Air Malta
24 Dec - 19 Jan	LATAM Airlines Group
14 Dec - 30 Dec	Ryanair
16 Dec - 12 Jan	Ryanair
15 Dec - 06 Jan	LATAM Airlines Group
13 Dec - 03 Jan	Ryanair
19 Dec - 09 Jan	Ryanair
01 Dec - 11 Dec	Emirates

Also check the deals for one-way flights from Oslo 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 Oslo to Buenos Aires in December from 946€

Return flights