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

Return flights

02 Dec - 09 Dec	Ryanair
03 Dec - 09 Dec	Ryanair
04 Dec - 10 Dec	Ryanair
03 Dec - 11 Dec	Ryanair
05 Dec - 12 Dec	Ryanair
12 Dec - 15 Dec	Wizz Air Malta
09 Dec - 16 Dec	Ryanair
06 Dec - 13 Dec	easyJet
04 Dec - 09 Dec	Ryanair
12 Dec - 14 Dec	Wizz Air Malta
29 Dec - 04 Jan	Wizz Air Malta
28 Dec - 01 Jan	Air Serbia
31 Dec - 03 Jan	Ryanair
30 Dec - 04 Jan	Ryanair
29 Dec - 03 Jan	Wizz Air Malta
28 Dec - 03 Jan	Air Serbia
29 Dec - 04 Jan	TAP	direct
29 Dec - 03 Jan	TAP	direct

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 $141

Return flights