Cheapest one-way flights from Ontario to Oslo in June from $330

Best time to book flights for Ontario (ONT) to Oslo (OSL) flights at AirHint

AirHint found the following cheapest one-way flights from Ontario (ONT) to Oslo (OSL) in June 2025 (see full year).

One-Way flights

28 Jun Frontier Airlines
01 Jun Frontier Airlines
15 Jun Frontier Airlines
08 Jun Frontier Airlines
10 Jun jetBlue
12 Jun jetBlue
22 Jun British Airways
04 Jun Frontier Airlines
11 Jun Frontier Airlines
27 Jun Frontier Airlines

Also check the deals for return flights from Ontario to Oslo in June.

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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