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

Return flights

05 May - 26 May	Alaska Airlines
05 May - 20 May	Alaska Airlines
06 May - 27 May	Qatar Airways
06 May - 25 May	Qatar Airways
05 May - 23 May	Alaska Airlines
06 May - 17 May	Qatar Airways
06 May - 22 May	Qatar Airways
06 May - 23 May	Qatar Airways
27 May - 02 Jun	Qatar Airways
12 May - 28 May	Qatar Airways
26 May - 15 Jun	Qatar Airways
09 May - 17 May	Qatar Airways
16 May - 09 Jun	Qatar Airways
13 May - 08 Jun	Qatar Airways
28 May - 24 Jun	Qatar Airways

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

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 Sulaymaniyah in May from $1101

Return flights