Cheapest return flights from Ontario to Oslo in September from 518€

AirHint found the following cheapest return flights from Ontario (ONT) to Oslo (OSL) in September 2026 (see full year).

Return flights

02 Sep - 09 Sep British Airways
09 Sep - 16 Sep British Airways
29 Sep - 06 Oct British Airways
05 Sep - 12 Sep British Airways
12 Sep - 19 Sep British Airways
16 Sep - 23 Sep British Airways
11 Sep - 18 Sep British Airways
28 Sep - 05 Oct British Airways
25 Sep - 02 Oct British Airways
18 Sep - 25 Sep British Airways
26 Sep - 03 Oct British Airways
19 Sep - 26 Sep British Airways
15 Sep - 22 Sep British Airways
23 Sep - 30 Sep British Airways

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

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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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