Cheapest one-way flights from Ontario to Istanbul in May from $569

AirHint found the following cheapest one-way flights from Ontario (ONT) to Istanbul (IST) in May 2026 (see full year).

One-Way flights

02 May Alaska Airlines
19 May Turkish Airlines
20 May Turkish Airlines
23 May Alaska Airlines
22 May Turkish Airlines
03 May Alaska Airlines
05 May British Airways
25 May British Airways
30 May Qatar Airways

Also check the deals for return flights from Ontario to Istanbul 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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