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

Return flights

03 Dec - 10 Dec	Turkish Airlines
02 Dec - 11 Dec	Turkish Airlines
02 Dec - 09 Dec	Turkish Airlines
03 Dec - 09 Dec	Turkish Airlines
10 Dec - 14 Jan	Alaska Airlines
30 Dec - 11 Jan	Turkish Airlines
12 Dec - 18 Dec	Turkish Airlines
26 Dec - 10 Jan	Turkish Airlines
30 Dec - 03 Jan	Spirit Airlines
26 Dec - 28 Dec	Turkish Airlines
29 Dec - 03 Jan	Spirit Airlines
24 Dec - 29 Dec	Spirit Airlines
25 Dec - 09 Jan	Spirit Airlines
12 Dec - 01 Jan	Volaris
22 Dec - 01 Jan	Spirit Airlines
12 Dec - 02 Jan	Turkish Airlines
29 Dec - 11 Jan	Delta
17 Dec - 24 Dec	Delta
17 Dec - 30 Dec	Emirates

Also check the deals for one-way flights from Houston to Bangkok in December.

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 December from 777€

Return flights