Cheapest return flights from London to Oslo in September from $227

Best time to book flights for London (LCY) to Oslo (OSL) flights at AirHint

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

Return flights

05 Sep - 07 Sep KLM
06 Sep - 07 Sep KLM
29 Sep - 06 Oct KLM
03 Sep - 10 Sep KLM
12 Sep - 15 Sep KLM
11 Sep - 17 Sep SWISS
03 Sep - 17 Sep SWISS
30 Sep - 07 Oct SWISS
17 Sep - 15 Oct SWISS
19 Sep - 20 Sep KLM
26 Sep - 29 Sep KLM
09 Sep - 23 Sep SWISS
01 Sep - 08 Sep Lufthansa
09 Sep - 16 Oct SWISS
25 Sep - 04 Oct KLM
29 Sep - 01 Oct Lufthansa

Also check the deals for one-way flights from London to Oslo in September.

Skyscanner

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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