AirHint found the following cheapest return flights from London (LCY) to Oslo (OSL) in September 2026 (see full year).
Return flights
| 10 Sep - 14 Sep | KLM | ||
| 16 Sep - 14 Oct | Lufthansa | ||
| 11 Sep - 14 Sep | KLM | ||
| 17 Sep - 20 Sep | Luxair | ||
| 10 Sep - 13 Sep | KLM | ||
| 23 Sep - 27 Sep | KLM | ||
| 06 Sep - 25 Sep | KLM |
Also check the deals for one-way flights from London to Oslo in September.
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