AirHint found the following cheapest return flights from Osaka (KIX) to Chiang Mai (CNX) in December 2026 (see full year).

Return flights

04 Dec - 08 Dec	Air China
01 Dec - 06 Dec	Air China
23 Dec - 01 Jan	China Airlines
28 Dec - 30 Dec	China Airlines
26 Dec - 04 Jan	China Airlines
27 Dec - 04 Jan	China Airlines
28 Dec - 06 Jan	China Airlines
25 Dec - 04 Jan	China Airlines
28 Dec - 04 Jan	China Airlines
26 Dec - 02 Jan	China Airlines
28 Dec - 01 Jan	China Airlines
25 Dec - 02 Jan	China Airlines
25 Dec - 01 Jan	China Airlines
28 Dec - 29 Dec	Air China
28 Dec - 28 Dec	Japan Airlines

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 345€

Return flights