Cheapest one-way flights from Chicago to Istanbul in October from 247€

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

One-Way flights

29 Oct Frontier Airlines
23 Oct TAP
18 Oct Spirit Airlines
30 Oct Frontier Airlines
20 Oct Frontier Airlines
19 Oct Spirit Airlines
21 Oct Spirit Airlines
17 Oct Frontier Airlines
25 Oct Air Serbia
16 Oct Turkish Airlines direct

Also check the deals for return flights from Chicago to Istanbul in October.

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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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