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

Return flights

30 May - 14 Jun	FrenchBee
05 May - 20 May	Air Transat
04 May - 11 May	TAP
15 May - 29 May	FrenchBee
27 May - 03 Jun	FrenchBee
04 May - 27 May	FrenchBee
06 May - 29 May	FrenchBee
10 May - 20 May	FrenchBee
24 May - 31 May	FrenchBee
01 May - 08 May	FrenchBee
08 May - 15 May	FrenchBee
15 May - 22 May	FrenchBee
31 May - 07 Jun	FrenchBee
24 May - 26 Jun	FrenchBee
31 May - 17 Jun	FrenchBee
29 May - 05 Jun	FrenchBee
30 May - 06 Jun	FrenchBee
26 May - 02 Jun	Air Transat
28 May - 04 Jun	Porter Airlines (Canada) Ltd
24 May - 26 Jun	Turkish Airlines	direct

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 634€

Return flights