Cheapest return flights from Ontario to Oslo in June from $576

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

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

Return flights

03 Jun - 10 Jun Frontier Airlines
30 Jun - 14 Jul British Airways
06 Jun - 13 Jun British Airways
04 Jun - 11 Jun British Airways
05 Jun - 12 Jun British Airways
12 Jun - 19 Jun British Airways
27 Jun - 11 Jul British Airways
24 Jun - 07 Jul British Airways
05 Jun - 08 Jun British Airways
08 Jun - 15 Jun British Airways
07 Jun - 14 Jun British Airways
26 Jun - 16 Jul British Airways
27 Jun - 04 Jul British Airways
21 Jun - 03 Jul British Airways
21 Jun - 28 Jun British Airways
08 Jun - 22 Jun British Airways
21 Jun - 05 Jul British Airways

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

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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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