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

Return flights

24 Sep - 29 Oct	China Airlines
04 Sep - 16 Sep	Japan Airlines
01 Sep - 30 Sep	Japan Airlines
26 Sep - 30 Sep	Japan Airlines
01 Sep - 15 Sep	Japan Airlines
03 Sep - 16 Sep	Japan Airlines
01 Sep - 16 Sep	Japan Airlines
17 Sep - 16 Oct	Japan Airlines
27 Sep - 09 Oct	Japan Airlines
25 Sep - 11 Oct	Japan Airlines
30 Sep - 29 Oct	Japan Airlines
25 Sep - 10 Oct	Japan Airlines
03 Sep - 07 Sep	Japan Airlines
09 Sep - 30 Sep	Japan Airlines
09 Sep - 17 Sep	Japan Airlines
01 Sep - 11 Sep	Japan Airlines
27 Sep - 05 Oct	Japan Airlines
28 Sep - 11 Oct	Japan Airlines
27 Sep - 10 Oct	Japan Airlines
26 Sep - 12 Oct	Japan Airlines

Also check the deals for one-way flights from Taipei 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.

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Cheapest return flights from Taipei to Oslo in September from $1590

Return flights