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

Return flights

03 May - 10 May	TAP
08 May - 15 May	TAP
10 May - 17 May	FrenchBee
15 May - 22 May	TAP
13 May - 27 May	TAP
05 May - 12 May	British Airways
06 May - 13 May	Air Canada
02 May - 09 May	Air Canada
07 May - 14 May	British Airways
20 May - 27 May	FrenchBee
23 May - 06 Jun	Royal Air Maroc
30 May - 06 Jun	Royal Air Maroc
29 May - 05 Jun	Royal Air Maroc
20 May - 04 Jun	KLM
26 May - 02 Jun	Air France
28 May - 04 Jun	Air France
25 May - 01 Jun	Air France
27 May - 03 Jun	Air France
31 May - 03 Jun	Air Canada
20 May - 05 Jun	Air Canada

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 660€

Return flights