Cheapest return flights from Chicago to Istanbul in October from 767€

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

Return flights

16 Oct - 21 Oct Frontier Airlines
01 Oct - 10 Oct KLM
08 Oct - 15 Oct Delta
07 Oct - 21 Oct Delta
07 Oct - 14 Oct Delta
08 Oct - 14 Oct Delta
02 Oct - 10 Oct Delta
31 Oct - 13 Nov KLM
07 Oct - 18 Oct Delta
03 Oct - 06 Oct Delta
24 Oct - 03 Nov Delta
18 Oct - 24 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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