Cheapest return flights from Houston to Istanbul in April from 570€

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

Return flights

15 Apr - 30 Apr Spirit Airlines
17 Apr - 24 Apr Frontier Airlines
16 Apr - 26 Apr Spirit Airlines
17 Apr - 21 Apr Frontier Airlines
29 Apr - 22 May Spirit Airlines
01 Apr - 08 Apr KLM
06 Apr - 13 Apr KLM
07 Apr - 14 Apr KLM
02 Apr - 16 Apr KLM
01 Apr - 26 May KLM
11 Apr - 19 Apr Frontier Airlines
26 Apr - 02 May KLM
01 Apr - 08 Apr Turkish Airlines direct
29 Apr - 22 May Turkish Airlines direct
01 Apr - 26 May Turkish Airlines direct
26 Apr - 02 May Turkish Airlines direct

Also check the deals for one-way flights from Houston 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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