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

Return flights

16 Dec - 20 Dec	Thai AirAsia X
15 Dec - 19 Dec	Shenzhen Airlines
18 Dec - 22 Dec	T'way Air
17 Dec - 22 Dec	T'way Air
17 Dec - 23 Dec	Thai AirAsia X
17 Dec - 19 Dec	Thai AirAsia X
15 Dec - 22 Dec	AirAsia X
23 Dec - 25 Dec	T'way Air
17 Dec - 24 Dec	Thai AirAsia X
23 Dec - 08 Jan	Eastar Jet
24 Dec - 08 Jan	Eastar Jet
24 Dec - 09 Jan	Eastar Jet
23 Dec - 07 Jan	Eastar Jet
17 Dec - 26 Dec	T'way Air
23 Dec - 06 Jan	EVA Air
31 Dec - 06 Jan	T'way Air
31 Dec - 07 Jan	T'way Air
31 Dec - 09 Jan	T'way Air
31 Dec - 05 Jan	T'way Air
23 Dec - 05 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.

Book a cheap hotel in Chiang Mai

Cheap car rent in Chiang Mai

Cheapest return flights from Osaka to Chiang Mai in December from $351

Return flights