AirHint found the following cheapest return flights from Tokyo (NRT) to Bangkok (DMK) in December 2025 (see full year).

Return flights

12 Dec - 16 Dec	VietJet Air
03 Dec - 16 Dec	VietJet Air
04 Dec - 16 Dec	VietJet Air
02 Dec - 09 Dec	VietJet Air
12 Dec - 20 Jan	VietJet Air
02 Dec - 08 Dec	VietJet Air
03 Dec - 08 Dec	VietJet Air
03 Dec - 09 Dec	VietJet Air
05 Dec - 09 Dec	VietJet Air
05 Dec - 08 Dec	VietJet Air
04 Dec - 09 Dec	VietJet Air
12 Dec - 14 Jan	VietJet Air
04 Dec - 14 Jan	VietJet Air
16 Dec - 13 Jan	VietJet Air
18 Dec - 18 Jan	Jetstar Japan
17 Dec - 11 Jan	Jetstar Japan
18 Dec - 13 Jan	Jetstar Japan
18 Dec - 12 Jan	Jetstar Japan
17 Dec - 12 Jan	Jetstar Japan
10 Dec - 10 Jan	VietJet Air

Also check the deals for one-way flights from Tokyo 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 Tokyo to Bangkok in December from $326

Return flights