Cheapest return flights from Houston to Istanbul in September from $660

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

Return flights

30 Sep - 07 Oct Spirit Airlines
27 Sep - 02 Oct Spirit Airlines
26 Sep - 02 Oct Spirit Airlines
22 Sep - 24 Sep Spirit Airlines
21 Sep - 30 Sep Spirit Airlines
17 Sep - 24 Sep Spirit Airlines
20 Sep - 30 Sep Spirit Airlines
26 Sep - 03 Oct Spirit Airlines
03 Sep - 07 Sep Frontier Airlines
11 Sep - 18 Sep Frontier Airlines
21 Sep - 29 Sep Spirit Airlines
06 Sep - 13 Sep Frontier Airlines
03 Sep - 17 Sep Frontier Airlines
28 Sep - 12 Oct Spirit Airlines
02 Sep - 09 Sep Frontier Airlines
18 Sep - 02 Oct Spirit Airlines
26 Sep - 04 Oct Spirit Airlines
01 Sep - 01 Oct Frontier Airlines
29 Sep - 07 Oct Turkish Airlines direct
30 Sep - 07 Oct Turkish Airlines direct

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

Skyscanner

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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