Cheapest return flights from Chicago to Istanbul in October from 613€

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

Return flights

07 Oct - 14 Oct Frontier Airlines
28 Oct - 19 Nov Air France
08 Oct - 15 Oct Delta
11 Oct - 29 Oct Porter Airlines (Canada) Ltd
02 Oct - 16 Oct Frontier Airlines
11 Oct - 17 Oct Frontier Airlines
02 Oct - 09 Oct Frontier Airlines
04 Oct - 11 Oct Frontier Airlines
02 Oct - 10 Oct Frontier Airlines
09 Oct - 19 Oct Frontier Airlines
13 Oct - 29 Oct Delta

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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