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

Return flights

10 Dec - 14 Dec	Air China
31 Dec - 03 Jan	Air China
12 Dec - 20 Dec	Air China	direct
11 Dec - 21 Dec	Air China	direct
14 Dec - 08 Jan	Hong Kong Airlines
23 Dec - 06 Jan	Thai Airways	direct
02 Dec - 05 Dec	Air China	direct
14 Dec - 08 Jan	Air China	direct
25 Dec - 04 Jan	Hainan Airlines
27 Dec - 10 Jan	Sichuan Airlines
29 Dec - 09 Jan	Thai Airways	direct
25 Dec - 03 Jan	Thai Airways	direct
27 Dec - 10 Jan	Thai Airways	direct
29 Dec - 04 Jan	Thai Airways	direct

Also check the deals for one-way flights from Beijing 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 Beijing to Bangkok in December from $248

Return flights