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

Return flights

21 Jan - 28 Jan	British Airways
19 Jan - 26 Jan	British Airways
22 Jan - 29 Jan	British Airways
15 Jan - 22 Jan	British Airways
09 Jan - 31 Jan	British Airways
05 Jan - 12 Jan	British Airways
18 Jan - 25 Jan	British Airways
11 Jan - 18 Jan	British Airways
24 Jan - 31 Jan	British Airways
21 Jan - 04 Feb	British Airways
08 Jan - 15 Jan	British Airways
25 Jan - 01 Feb	British Airways
24 Jan - 07 Feb	British Airways

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

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 Ontario to Oslo in January from 530€

Return flights