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

Return flights

31 Dec - 07 Jan	KLM
31 Dec - 08 Jan	KLM
17 Dec - 24 Dec	KLM
31 Dec - 06 Jan	KLM
09 Dec - 16 Dec	Lufthansa
10 Dec - 16 Dec	Lufthansa
17 Dec - 22 Dec	KLM
18 Dec - 22 Dec	KLM
15 Dec - 22 Dec	KLM
10 Dec - 17 Dec	Lufthansa
17 Dec - 23 Dec	KLM
26 Dec - 13 Jan	KLM
09 Dec - 10 Dec	Lufthansa
03 Dec - 10 Dec	Lufthansa
31 Dec - 01 Jan	KLM
05 Dec - 06 Jan	Lufthansa
24 Dec - 07 Jan	Lufthansa
08 Dec - 29 Jan	Lufthansa
26 Dec - 01 Jan	KLM
19 Dec - 09 Jan	Lufthansa

Also check the deals for one-way flights from London 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 London to Oslo in December from $259

Return flights