Cheapest return flights from Ontario to Oslo in May from 628€

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

Return flights

01 May - 08 May British Airways
03 May - 10 May British Airways
19 May - 26 May British Airways
10 May - 17 May British Airways
16 May - 23 May British Airways
24 May - 31 May British Airways
23 May - 30 May British Airways
30 May - 06 Jun British Airways

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

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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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