Cheapest return flights from Ontario to Istanbul in May from $1062

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

Return flights

07 May - 12 May Qatar Airways
07 May - 17 May Qatar Airways
12 May - 26 May Qatar Airways
11 May - 31 May Qatar Airways
09 May - 23 May Qatar Airways
14 May - 18 May Qatar Airways
14 May - 03 Jun Qatar Airways
20 May - 01 Jun Qatar Airways
21 May - 30 May Qatar Airways
25 May - 05 Jun Qatar Airways
30 May - 10 Jun Lufthansa
23 May - 30 May Qatar Airways
01 May - 16 May Lufthansa
30 May - 23 Jun Qatar Airways
13 May - 27 May Qatar Airways

Also check the deals for one-way 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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