Cheapest return flights from Keflavik to Oslo in September from 180€

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

Return flights

30 Sep - 01 Oct Wizz Air
30 Sep - 21 Oct Norwegian direct
23 Sep - 24 Sep Norwegian
23 Sep - 12 Oct Norwegian direct
23 Sep - 09 Oct Norwegian direct
23 Sep - 07 Oct Norwegian direct
28 Sep - 09 Oct Norwegian direct
28 Sep - 12 Oct Norwegian direct
30 Sep - 09 Oct Norwegian direct
30 Sep - 12 Oct Norwegian direct
28 Sep - 19 Oct Norwegian direct
18 Sep - 25 Sep Wizz Air
23 Sep - 30 Sep Wizz Air
22 Sep - 29 Sep Fly Play
20 Sep - 22 Sep Wizz Air
23 Sep - 25 Sep Norwegian direct
21 Sep - 25 Sep Norwegian direct
21 Sep - 23 Sep Norwegian direct
19 Sep - 21 Sep Lufthansa
23 Sep - 28 Sep Norwegian direct

Also check the deals for one-way flights from Keflavik 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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