Cheapest return flights from Chicago to Istanbul in May from 539€

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

Return flights

10 May - 25 May Aer Lingus
05 May - 19 May Spirit Airlines
03 May - 22 May Aer Lingus
06 May - 18 May KLM
16 May - 30 May LOT
24 May - 03 Jun Icelandair
19 May - 02 Jun LOT
25 May - 07 Jun KLM
30 May - 09 Jun KLM
23 May - 29 May KLM
28 May - 11 Jun Air France
25 May - 01 Jun KLM
22 May - 29 May KLM
22 May - 06 Jun Icelandair
03 May - 22 May Turkish Airlines direct
19 May - 02 Jun Turkish Airlines direct
10 May - 25 May Turkish Airlines direct
23 May - 29 May Turkish Airlines direct
09 May - 28 Jun Delta
22 May - 06 Jun Turkish Airlines direct

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

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