AirHint found the following cheapest return flights from Chicago (ORD) to Istanbul (IST) in January 2026 (see full year).

Return flights

23 Jan - 29 Jan	Icelandair
27 Jan - 02 Feb	Icelandair
26 Jan - 02 Feb	Icelandair
27 Jan - 03 Feb	Icelandair
20 Jan - 27 Jan	Icelandair
28 Jan - 04 Feb	Icelandair
26 Jan - 11 Feb	Spirit Airlines
26 Jan - 14 Feb	Spirit Airlines
26 Jan - 03 Feb	Lufthansa
25 Jan - 08 Feb	Air France
11 Jan - 25 Jan	Air France
14 Jan - 17 Jan	TAP
03 Jan - 24 Jan	LOT
14 Jan - 28 Jan	LOT
23 Jan - 03 Feb	KLM
14 Jan - 28 Jan	Turkish Airlines	direct
23 Jan - 29 Jan	Turkish Airlines	direct
11 Jan - 25 Jan	Turkish Airlines	direct
25 Jan - 08 Feb	Turkish Airlines	direct
03 Jan - 24 Jan	Turkish Airlines	direct

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

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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Cheapest return flights from Chicago to Istanbul in January from 454€

Return flights