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

Return flights

09 Dec - 16 Dec	KLM
10 Dec - 17 Dec	KLM
31 Dec - 05 Jan	KLM
06 Dec - 09 Dec	KLM
06 Dec - 08 Dec	KLM
06 Dec - 07 Dec	KLM
05 Dec - 09 Dec	KLM
31 Dec - 07 Jan	KLM
05 Dec - 08 Dec	KLM
05 Dec - 07 Dec	KLM
12 Dec - 14 Dec	KLM
12 Dec - 16 Dec	KLM
31 Dec - 02 Jan	KLM
29 Dec - 08 Jan	Lufthansa
31 Dec - 04 Jan	KLM
23 Dec - 02 Jan	Lufthansa
26 Dec - 02 Jan	Lufthansa
30 Dec - 03 Jan	KLM
28 Dec - 02 Jan	KLM
27 Dec - 02 Jan	KLM

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.

Book a cheap hotel in Oslo

Cheap car rent in Oslo

Cheapest return flights from London to Oslo in December from 185€

Return flights