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

Return flights

03 Dec - 10 Dec	AirAsia
02 Dec - 03 Dec	AirAsia
02 Dec - 09 Dec	AirAsia
01 Dec - 12 Dec	China Eastern
12 Dec - 16 Dec	Thai AirAsia
10 Dec - 16 Dec	Thai AirAsia
11 Dec - 16 Dec	Thai AirAsia
12 Dec - 17 Dec	Thai VietJet Air
29 Dec - 09 Jan	China Southern
10 Dec - 17 Dec	Thai VietJet Air
01 Dec - 08 Dec	Thai VietJet Air
27 Dec - 03 Jan	Thai AirAsia
26 Dec - 02 Jan	Thai AirAsia
27 Dec - 02 Jan	STARLUX Airlines
26 Dec - 01 Jan	Thai AirAsia
29 Dec - 03 Jan	Thai VietJet Air
29 Dec - 02 Jan	Thai VietJet Air

Also check the deals for one-way flights from Chiang Mai to Osaka 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 Chiang Mai to Osaka in December from 245€

Return flights