Cheapest return flights from Chicago to Istanbul in April from 733€

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

Return flights

23 Apr - 28 Apr Frontier Airlines
03 Apr - 10 Apr KLM
14 Apr - 19 Apr Frontier Airlines
28 Apr - 05 May Delta
14 Apr - 22 Apr Frontier Airlines
27 Apr - 04 May Delta
08 Apr - 21 Apr Delta
02 Apr - 08 Apr Delta
17 Apr - 30 Apr Delta
23 Apr - 26 Apr Delta
25 Apr - 01 May Frontier Airlines

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

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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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