Cheapest return flights from Houston to Istanbul in September from $781

Best time to book flights for Houston (IAH) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from Houston (IAH) to Istanbul (IST) in September 2025 (see full year).

Return flights

08 Sep - 17 Sep Spirit Airlines
02 Sep - 22 Sep Spirit Airlines
01 Sep - 15 Sep Lufthansa
14 Sep - 01 Oct Spirit Airlines
04 Sep - 18 Sep Spirit Airlines
03 Sep - 19 Sep Spirit Airlines
05 Sep - 20 Sep Spirit Airlines
27 Sep - 04 Oct Spirit Airlines
28 Sep - 04 Oct Spirit Airlines
24 Sep - 01 Oct Spirit Airlines
04 Sep - 23 Sep Qatar Airways
15 Sep - 05 Oct Qatar Airways
22 Sep - 12 Oct Qatar Airways
08 Sep - 17 Sep Turkish Airlines direct
04 Sep - 18 Sep Turkish Airlines direct
04 Sep - 23 Sep Turkish Airlines direct
22 Sep - 09 Oct Turkish Airlines direct
24 Sep - 01 Oct Turkish Airlines direct
30 Sep - 06 Oct Turkish Airlines direct
14 Sep - 01 Oct Turkish Airlines direct

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

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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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