Cheapest return flights from Ontario to Oslo in September from $821

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 September 2025 (see full year).

Return flights

09 Sep - 15 Sep British Airways
10 Sep - 15 Sep British Airways
30 Sep - 07 Oct jetBlue
16 Sep - 23 Sep jetBlue
09 Sep - 16 Sep jetBlue
24 Sep - 01 Oct jetBlue
01 Sep - 08 Sep jetBlue
11 Sep - 18 Sep jetBlue
02 Sep - 09 Sep jetBlue
09 Sep - 14 Sep jetBlue
07 Sep - 14 Sep jetBlue
08 Sep - 15 Sep jetBlue
28 Sep - 05 Oct jetBlue
27 Sep - 04 Oct jetBlue

Also check the deals for one-way flights from Ontario 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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