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

Return flights

07 May - 18 May	FrenchBee
03 May - 13 May	FrenchBee
18 May - 27 May	FrenchBee
05 May - 12 May	WestJet
11 May - 18 May	WestJet
24 May - 03 Jun	FrenchBee
10 May - 18 May	FrenchBee
26 May - 02 Jun	Air Transat
05 May - 19 May	WestJet
23 May - 30 May	FrenchBee
10 May - 20 May	FrenchBee
17 May - 27 May	FrenchBee
25 May - 01 Jun	Air Transat
25 May - 04 Jun	FrenchBee
27 May - 09 Jun	FrenchBee
31 May - 24 Jun	FrenchBee
24 May - 07 Jun	WestJet
20 May - 12 Jun	TAP
22 May - 03 Jun	TAP
27 May - 03 Jun	FrenchBee

Also check the deals for one-way flights from Montreal to Istanbul 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 Montreal to Istanbul in May from $631

Return flights