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

Return flights

01 Dec - 07 Dec	Air Serbia
05 Dec - 07 Dec	Air Serbia
12 Dec - 16 Dec	Ryanair
05 Dec - 10 Dec	Air Serbia
04 Dec - 07 Dec	Ryanair
18 Dec - 26 Dec	Aegean Airlines
04 Dec - 10 Dec	Ryanair
30 Dec - 04 Jan	KLM
02 Dec - 09 Dec	Ryanair
08 Dec - 14 Dec	Wizz Air UK
14 Dec - 16 Dec	Aegean Airlines
28 Dec - 02 Jan	Air Serbia
28 Dec - 11 Jan	Air Serbia
31 Dec - 06 Jan	Scandinavian Airlines
31 Dec - 14 Jan	Scandinavian Airlines
30 Dec - 11 Jan	Scandinavian Airlines
31 Dec - 04 Jan	Wizz Air UK
24 Dec - 04 Jan	Aegean Airlines
31 Dec - 12 Jan	Scandinavian Airlines
28 Dec - 11 Jan	Aegean Airlines	direct

Also check the deals for one-way flights from Athens to Oslo 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 Athens to Oslo in December from 254CAD

Return flights