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

Return flights

03 Dec - 10 Dec	China Eastern
04 Dec - 07 Dec	HK Express
02 Dec - 07 Dec	HK Express
02 Dec - 06 Dec	HK Express
13 Dec - 17 Dec	HK Express
13 Dec - 20 Dec	Spring Airlines
18 Dec - 21 Dec	T'way Air
13 Dec - 19 Dec	Spring Airlines
26 Dec - 05 Jan	HK Express
26 Dec - 04 Jan	HK Express
24 Dec - 28 Dec	Air China
26 Dec - 29 Dec	Spring Airlines

Also check the deals for one-way flights from Cheju 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 Cheju to Bangkok in December from $309

Return flights