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

Return flights

02 Dec - 10 Dec	Vietnam Airlines
06 Dec - 10 Dec	HK Express
06 Dec - 11 Dec	HK Express
13 Dec - 17 Dec	VietJet Air
04 Dec - 10 Dec	VietJet Air
04 Dec - 11 Dec	VietJet Air
12 Dec - 17 Dec	VietJet Air
05 Dec - 09 Dec	HK Express
10 Dec - 17 Dec	VietJet Air
05 Dec - 08 Dec	HK Express
22 Dec - 21 Jan	VietJet Air
22 Dec - 08 Jan	Jin Air	direct
24 Dec - 07 Jan	VietJet Air
23 Dec - 08 Jan	Jin Air	direct
22 Dec - 05 Jan	Jin Air	direct
22 Dec - 03 Jan	Jin Air	direct
22 Dec - 07 Jan	Jin Air	direct
22 Dec - 01 Jan	Jin Air	direct
31 Dec - 07 Jan	VietJet Air
31 Dec - 10 Jan	VietJet Air

Also check the deals for one-way flights from Busan 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 Busan to Bangkok in December from $237

Return flights