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

Return flights

03 Dec - 09 Dec	Spirit Airlines
08 Dec - 12 Dec	Turkish Airlines
02 Dec - 09 Dec	Turkish Airlines
03 Dec - 16 Dec	Turkish Airlines
03 Dec - 15 Dec	Turkish Airlines
02 Dec - 27 Jan	Turkish Airlines
09 Dec - 14 Dec	Spirit Airlines
09 Dec - 18 Dec	Turkish Airlines
10 Dec - 14 Jan	Alaska Airlines
10 Dec - 16 Dec	Japan Airlines
30 Dec - 11 Jan	Alaska Airlines
15 Dec - 30 Dec	Frontier Airlines
24 Dec - 29 Dec	IndiGo
16 Dec - 07 Jan	Zipair
25 Dec - 09 Jan	Spirit Airlines
22 Dec - 01 Jan	Frontier Airlines
29 Dec - 03 Jan	Spirit Airlines
30 Dec - 06 Jan	Turkish Airlines
29 Dec - 11 Jan	Turkish Airlines
15 Dec - 05 Jan	IndiGo

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Houston to Bangkok in December from $856

Return flights