AirHint found the following cheapest return flights from Toronto (YYZ) to Oslo (OSL) in August 2025 (see full year).

Return flights

20 Aug - 24 Aug	Porter Airlines (Canada) Ltd
25 Aug - 02 Sep	WestJet
24 Aug - 02 Sep	Porter Airlines (Canada) Ltd
15 Aug - 21 Aug	Porter Airlines (Canada) Ltd
06 Aug - 14 Aug	Porter Airlines (Canada) Ltd
10 Aug - 14 Aug	TAP
12 Aug - 22 Aug	Flair Airlines
11 Aug - 15 Aug	Air France
01 Aug - 13 Aug	Porter Airlines (Canada) Ltd
01 Aug - 29 Aug	Porter Airlines (Canada) Ltd
02 Aug - 09 Aug	Air Canada

Also check the deals for one-way flights from Toronto to Oslo in August.

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 Toronto to Oslo in August from 533€

Return flights