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

Return flights

01 Dec - 06 Dec	Ryanair
09 Dec - 15 Dec	Ryanair
01 Dec - 05 Dec	Ryanair
06 Dec - 15 Dec	Ryanair
04 Dec - 08 Dec	Ryanair
06 Dec - 08 Dec	Ryanair
05 Dec - 10 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
11 Dec - 15 Dec	Ryanair
02 Dec - 09 Dec	Ryanair
10 Dec - 02 Jan	Ryanair
17 Dec - 04 Jan	easyJet
27 Dec - 01 Jan	Ryanair
27 Dec - 04 Jan	Ryanair
30 Dec - 07 Jan	LOT
30 Dec - 08 Jan	LOT
31 Dec - 04 Jan	easyJet
18 Dec - 04 Jan	easyJet
27 Dec - 03 Jan	Ryanair
30 Dec - 05 Jan	Finnair

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 119€

Return flights