AirHint found the following cheapest one-way flights from Houston (HOU) to Istanbul (IST) in August 2025 (see full year).

One-Way flights

26 Aug	Spirit Airlines
27 Aug	Spirit Airlines
17 Aug	Lufthansa
20 Aug	Delta
01 Aug	British Airways
26 Aug	Turkish Airlines	direct
27 Aug	Turkish Airlines	direct
17 Aug	Turkish Airlines	direct
01 Aug	Turkish Airlines	direct

Also check the deals for return flights from Houston to Istanbul in August.

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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Cheapest one-way flights from Houston to Istanbul in August from $328

One-Way flights