Cheapest return flights from Basel to Oslo in September from $133

Best time to book flights for Basel (BSL) to Oslo (OSL) flights at AirHint

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

Return flights

25 Sep - 02 Oct Norwegian direct
11 Sep - 21 Sep Norwegian direct
21 Sep - 02 Oct Norwegian direct
11 Sep - 02 Oct Norwegian direct
21 Sep - 25 Sep Norwegian direct
18 Sep - 21 Sep Norwegian direct
11 Sep - 25 Sep Norwegian direct
07 Sep - 21 Sep Norwegian direct
25 Sep - 05 Oct Norwegian direct
18 Sep - 02 Oct Norwegian direct
25 Sep - 28 Sep Norwegian direct
18 Sep - 25 Sep Norwegian direct
11 Sep - 18 Sep Norwegian direct
07 Sep - 25 Sep Norwegian direct
21 Sep - 05 Oct Norwegian direct
21 Sep - 28 Sep Norwegian direct
18 Sep - 05 Oct Norwegian direct
22 Sep - 02 Oct Norwegian Air Sweden AOC
22 Sep - 05 Oct Norwegian Air Sweden AOC
12 Sep - 02 Oct Norwegian Air Sweden AOC

Also check the deals for one-way flights from Basel 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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