Cheapest return flights from Chicago to Istanbul in October from $652

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

04 Oct - 11 Oct Spirit Airlines
05 Oct - 21 Oct Icelandair
07 Oct - 18 Oct Icelandair
09 Oct - 17 Oct Icelandair
05 Oct - 12 Oct Icelandair
06 Oct - 13 Oct Icelandair
13 Oct - 27 Oct Spirit Airlines
05 Oct - 13 Oct Icelandair
21 Oct - 29 Oct Icelandair
07 Oct - 20 Oct Spirit Airlines

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul