Cheapest return flights from Ottawa to Oslo in September from $729

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

Return flights

04 Sep - 14 Sep Air France
05 Sep - 14 Sep Air France
09 Sep - 15 Sep Air France
16 Sep - 10 Oct Air France
16 Sep - 12 Oct Air France
10 Sep - 03 Oct Air France
03 Sep - 17 Sep Porter Airlines (Canada) Ltd
10 Sep - 24 Sep Porter Airlines (Canada) Ltd
02 Sep - 17 Sep Porter Airlines (Canada) Ltd
10 Sep - 01 Oct Air France
02 Sep - 16 Sep Porter Airlines (Canada) Ltd
16 Sep - 30 Sep Porter Airlines (Canada) Ltd
03 Sep - 18 Sep Porter Airlines (Canada) Ltd
02 Sep - 23 Sep Porter Airlines (Canada) Ltd
17 Sep - 06 Oct Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Ottawa 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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