AirHint found the following cheapest return flights from Houston (HOU) to Bangkok (BKK) in August 2025 (see full year).

Return flights

27 Aug - 05 Sep	Spirit Airlines
13 Aug - 27 Aug	Spirit Airlines
11 Aug - 22 Aug	Spirit Airlines
28 Aug - 15 Sep	ANA
21 Aug - 26 Aug	United
05 Aug - 25 Sep	WestJet
18 Aug - 01 Sep	ANA
24 Aug - 03 Sep	Delta
29 Aug - 14 Sep	ANA
07 Aug - 21 Aug	Spirit Airlines
22 Aug - 31 Aug	ANA
01 Aug - 01 Sep	ANA
01 Aug - 29 Sep	ANA
02 Aug - 10 Aug	ANA
08 Aug - 18 Aug	Spirit Airlines
01 Aug - 08 Aug	Frontier Airlines

Also check the deals for one-way flights from Houston to Bangkok 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 return flights from Houston to Bangkok in August from $832

Return flights