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

Return flights

21 May - 28 May	Lufthansa
13 May - 20 May	Lufthansa
27 May - 02 Jun	Lufthansa
18 May - 28 May	Lufthansa
23 May - 30 May	Lufthansa
01 May - 07 May	Lufthansa
04 May - 12 May	Lufthansa
23 May - 31 May	Lufthansa
25 May - 31 May	Lufthansa
07 May - 14 May	Lufthansa
01 May - 08 May	Lufthansa
25 May - 05 Jun	Lufthansa
27 May - 02 Jun	Turkish Airlines	direct

Also check the deals for one-way flights from Casablanca 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 Casablanca to Istanbul in May from $246

Return flights