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

Return flights

01 Dec - 05 Dec	Ryanair
09 Dec - 12 Dec	Ryanair
09 Dec - 15 Dec	Ryanair
08 Dec - 11 Dec	Ryanair
02 Dec - 06 Dec	Ryanair
11 Dec - 14 Dec	Ryanair
23 Dec - 25 Dec	Ryanair
25 Dec - 27 Jan	LOT
22 Dec - 24 Dec	easyJet
24 Dec - 02 Jan	LOT
24 Dec - 26 Dec	LOT
30 Dec - 05 Jan	Ryanair
26 Dec - 03 Jan	Ryanair
26 Dec - 28 Dec	Ryanair
26 Dec - 04 Jan	Ryanair
20 Dec - 04 Jan	Ryanair
27 Dec - 05 Jan	Ryanair
27 Dec - 01 Jan	KLM
26 Dec - 03 Jan	Lufthansa	direct
25 Dec - 27 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 199CAD

Return flights