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

Return flights

16 Dec - 23 Dec	Air China
13 Dec - 17 Dec	Air China
17 Dec - 22 Dec	Air China
10 Dec - 17 Dec	China Eastern
17 Dec - 30 Dec	Air China
09 Dec - 18 Dec	Air Macau
10 Dec - 14 Dec	Air China
09 Dec - 15 Dec	Air China
09 Dec - 12 Dec	Air China
09 Dec - 14 Dec	Air China
17 Dec - 14 Jan	Air China
20 Dec - 01 Jan	Air China
16 Dec - 15 Jan	Thai AirAsia X	direct
15 Dec - 12 Jan	Air China
20 Dec - 10 Jan	Thai VietJet Air
16 Dec - 16 Jan	China Southern
20 Dec - 07 Jan	Thai AirAsia X	direct
20 Dec - 10 Jan	Thai AirAsia X	direct
23 Dec - 06 Jan	Thai VietJet Air
31 Dec - 07 Jan	China Eastern

Also check the deals for one-way flights from Osaka 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 Osaka to Bangkok in December from 147€

Return flights