AirHint found the following cheapest return flights from Keflavik (KEF) to Oslo (OSL)
in September 2025 (see full year ).
Return flights
09 Sep
- 11 Sep
Norwegian
$ 114
direct
23 Sep
- 14 Oct
Norwegian
$ 114
direct
23 Sep
- 07 Oct
Norwegian
$ 124
direct
23 Sep
- 09 Oct
Norwegian
$ 124
direct
23 Sep
- 30 Sep
Norwegian
$ 134
direct
09 Sep
- 16 Sep
Norwegian
$ 134
direct
09 Sep
- 30 Sep
Norwegian
$ 134
direct
23 Sep
- 25 Sep
Norwegian
$ 144
direct
09 Sep
- 25 Sep
Norwegian
$ 144
direct
23 Sep
- 02 Oct
Norwegian
$ 144
direct
16 Sep
- 07 Oct
Norwegian
$ 151
direct
09 Sep
- 14 Sep
Norwegian
$ 154
direct
30 Sep
- 21 Oct
Norwegian
$ 154
direct
30 Sep
- 07 Oct
Norwegian
$ 154
direct
30 Sep
- 09 Oct
Norwegian
$ 154
direct
16 Sep
- 30 Sep
Norwegian
$ 161
direct
04 Sep
- 11 Sep
Norwegian
$ 164
direct
30 Sep
- 16 Oct
Norwegian
$ 164
direct
18 Sep
- 21 Sep
Scandinavian Airlines
$ 168
direct
16 Sep
- 02 Oct
Norwegian
$ 171
direct
Also check the deals for one-way flights from Keflavik to Oslo in September .
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.