AirHint found the following cheapest return flights from Chicago (ORD) to Istanbul (SAW) in May 2026 (see full year).

Return flights

04 May - 12 May	SWISS
06 May - 19 May	Aer Lingus
06 May - 20 May	Aer Lingus
12 May - 19 May	Aer Lingus
04 May - 03 Jun	Aer Lingus
07 May - 19 May	Icelandair
06 May - 18 May	Air Canada
07 May - 18 May	Icelandair
13 May - 20 May	Air Canada
02 May - 13 May	Air Canada
12 May - 26 May	SWISS
23 May - 05 Jun	Icelandair
23 May - 06 Jun	Icelandair
22 May - 06 Jun	Icelandair
30 May - 13 Jun	Icelandair
15 May - 11 Jun	Emirates

Also check the deals for one-way flights from Chicago 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 Chicago to Istanbul in May from $592

Return flights