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

Return flights

01 Dec - 03 Dec	Ryanair
08 Dec - 15 Dec	Ryanair
01 Dec - 06 Dec	Ryanair
12 Dec - 15 Dec	Wizz Air Malta
03 Dec - 06 Dec	Ryanair
06 Dec - 09 Dec	easyJet
01 Dec - 04 Dec	Ryanair
05 Dec - 07 Dec	Ryanair
04 Dec - 12 Dec	Ryanair
16 Dec - 17 Dec	Ryanair
25 Dec - 01 Jan	KLM
29 Dec - 02 Jan	Wizz Air Malta
31 Dec - 02 Jan	Vueling Airlines
26 Dec - 01 Jan	Ryanair
27 Dec - 03 Jan	Ryanair
26 Dec - 04 Jan	Ryanair
31 Dec - 04 Jan	Vueling Airlines
29 Dec - 03 Jan	Wizz Air Malta
28 Dec - 02 Jan	Air Serbia
30 Dec - 01 Jan	easyJet

Also check the deals for one-way flights from Lisbon 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 Lisbon to Oslo in December from 121€

Return flights