Cheapest return flights from Chicago to Istanbul in December from 384€

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

Return flights

03 Dec - 08 Dec Icelandair
06 Dec - 11 Dec Icelandair
05 Dec - 12 Dec Icelandair
05 Dec - 09 Dec Icelandair
02 Dec - 12 Dec Icelandair
05 Dec - 10 Dec Icelandair
06 Dec - 13 Dec Frontier Airlines
06 Dec - 11 Jan Spirit Airlines
06 Dec - 27 Dec Spirit Airlines
11 Dec - 08 Jan Spirit Airlines
04 Dec - 10 Dec Icelandair
27 Dec - 16 Jan Icelandair
05 Dec - 08 Dec Frontier Airlines
30 Dec - 13 Jan Delta
15 Dec - 11 Jan KLM
12 Dec - 12 Jan Spirit Airlines
15 Dec - 10 Jan Spirit Airlines
04 Dec - 11 Jan Frontier Airlines
26 Dec - 17 Jan Scandinavian Airlines
29 Dec - 10 Jan Scandinavian Airlines

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

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