Cheapest return flights from Houston to Istanbul in April from 645€

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

Return flights

16 Apr - 26 Apr Frontier Airlines
23 Apr - 30 Apr Frontier Airlines
19 Apr - 28 Apr Frontier Airlines
16 Apr - 30 Apr Spirit Airlines
19 Apr - 03 May Frontier Airlines
21 Apr - 29 Apr Frontier Airlines
15 Apr - 24 Apr Spirit Airlines
18 Apr - 25 Apr Frontier Airlines
09 Apr - 17 Apr Turkish Airlines direct
15 Apr - 24 Apr Turkish Airlines direct
27 Apr - 29 Apr Frontier Airlines
19 Apr - 03 May Turkish Airlines direct

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

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