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

Return flights

12 Dec - 19 Dec	HK Express
05 Dec - 15 Dec	HK Express
10 Dec - 19 Dec	HK Express
05 Dec - 12 Dec	HK Express
03 Dec - 10 Dec	HK Express
14 Dec - 19 Dec	HK Express
10 Dec - 16 Dec	HK Express
15 Dec - 22 Dec	Thai AirAsia
05 Dec - 10 Dec	HK Express
04 Dec - 10 Dec	HK Express
23 Dec - 12 Jan	Thai AirAsia
21 Dec - 05 Jan	Thai VietJet Air
20 Dec - 05 Jan	Thai AirAsia
24 Dec - 12 Jan	Thai AirAsia
24 Dec - 13 Jan	Thai AirAsia
19 Dec - 04 Jan	Thai AirAsia
23 Dec - 06 Jan	Thai AirAsia
23 Dec - 07 Jan	Thai AirAsia
23 Dec - 09 Jan	Thai AirAsia
28 Dec - 05 Jan	Thai AirAsia

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 $326

Return flights