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

Return flights

23 Jun - 04 Jul	Air Transat
21 Jun - 24 Jun	Air Transat
19 Jun - 29 Jun	KLM
20 Jun - 27 Jun	Air Transat
23 Jun - 03 Jul	Air France
21 Jun - 28 Jun	Air Transat
20 Jun - 22 Jun	Air Transat
19 Jun - 28 Jun	Air Transat
21 Jun - 30 Jun	Air Transat
26 Jun - 06 Jul	Air Transat
26 Jun - 01 Jul	Air Transat
28 Jun - 13 Jul	Air Transat

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

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 June from 649€

Return flights