Cheapest return flights from Chicago to Istanbul in October from $640

Best time to book flights for Chicago (ORD) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to Istanbul (IST) in October 2025 (see full year).

Return flights

06 Oct - 31 Oct Icelandair
20 Oct - 03 Nov Icelandair
08 Oct - 22 Oct Icelandair
15 Oct - 05 Nov Icelandair
15 Oct - 08 Nov Icelandair
23 Oct - 10 Nov Icelandair
07 Oct - 21 Oct Icelandair
01 Oct - 08 Oct Icelandair
11 Oct - 18 Oct Icelandair
19 Oct - 26 Oct Spirit Airlines
12 Oct - 02 Nov Royal Jordanian
14 Oct - 04 Nov Royal Jordanian
14 Oct - 02 Nov Royal Jordanian
08 Oct - 19 Oct Icelandair
17 Oct - 31 Oct Icelandair
08 Oct - 29 Oct Qatar Airways
03 Oct - 15 Oct Icelandair
20 Oct - 03 Nov Turkish Airlines direct
14 Oct - 02 Nov Turkish Airlines direct

Also check the deals for one-way flights from Chicago to Istanbul in October.

Skyscanner

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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