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

Return flights

10 Dec - 14 Jan	AirAsia X
10 Dec - 17 Dec	China Eastern
15 Dec - 25 Dec	Air China
15 Dec - 22 Dec	Air China
16 Dec - 23 Dec	Thai AirAsia X
15 Dec - 24 Dec	Thai AirAsia X
16 Dec - 19 Dec	Thai AirAsia X
16 Dec - 25 Dec	Thai AirAsia X
17 Dec - 20 Dec	Thai AirAsia X
18 Dec - 21 Dec	Thai AirAsia X
18 Dec - 20 Dec	Thai AirAsia X
13 Dec - 09 Jan	HK Express
16 Dec - 20 Jan	Thai VietJet Air
22 Dec - 04 Jan	T'way Air
31 Dec - 04 Jan	T'way Air
31 Dec - 07 Jan	T'way Air
31 Dec - 08 Jan	T'way Air
31 Dec - 05 Jan	T'way Air
24 Dec - 04 Jan	T'way Air
25 Dec - 04 Jan	T'way Air

Also check the deals for one-way flights from Osaka to Chiang Mai 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 Chiang Mai in December from 212€

Return flights