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

Return flights

04 May - 11 May	Air Transat
27 May - 03 Jun	Air Transat
22 May - 29 May	Air Transat
13 May - 20 May	Air Transat
25 May - 01 Jun	Air Transat
04 May - 25 May	Air Transat
06 May - 13 May	Air Transat
24 May - 31 May	Air Transat
10 May - 20 May	Air Transat
08 May - 29 May	FrenchBee
03 May - 03 Jun	FrenchBee
01 May - 08 May	Air Transat
11 May - 18 May	Air Transat
30 May - 03 Jun	FrenchBee
31 May - 07 Jun	FrenchBee
31 May - 08 Jun	FrenchBee
29 May - 05 Jun	FrenchBee
30 May - 06 Jun	FrenchBee
27 May - 12 Jun	FrenchBee
24 May - 07 Jun	Air Transat

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 566€

Return flights