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

Return flights

02 Dec - 16 Dec	Ryanair
01 Dec - 16 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
02 Dec - 11 Dec	Ryanair
01 Dec - 11 Dec	Ryanair
14 Dec - 11 Jan	Ryanair
01 Dec - 08 Dec	Ryanair
03 Dec - 17 Dec	Air France
12 Dec - 21 Dec	Air France
14 Dec - 17 Dec	KLM
25 Dec - 05 Jan	KLM
18 Dec - 21 Dec	Ryanair
23 Dec - 03 Jan	KLM
27 Dec - 04 Jan	KLM
14 Dec - 11 Jan	Lufthansa	direct
23 Dec - 03 Jan	Lufthansa	direct
25 Dec - 05 Jan	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Oslo in December from 141€

Return flights