Cheapest return flights from Chicago to Istanbul in January from 658€

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

Return flights

08 Jan - 15 Jan Frontier Airlines
23 Jan - 01 Feb Frontier Airlines
14 Jan - 19 Jan KLM
01 Jan - 10 Jan Frontier Airlines
01 Jan - 09 Jan Frontier Airlines
29 Jan - 04 Feb Delta
01 Jan - 11 Jan Frontier Airlines
15 Jan - 19 Jan Delta
03 Jan - 10 Jan Frontier Airlines
02 Jan - 09 Jan Frontier Airlines
19 Jan - 23 Jan Delta
17 Jan - 21 Jan Delta
30 Jan - 01 Feb Delta

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

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