Cheapest one-way flights from Seoul to Chiang Mai in December from $144

Best time to book flights for Seoul (ICN) to Chiang Mai (CNX) flights at AirHint

AirHint found the following cheapest one-way flights from Seoul (ICN) to Chiang Mai (CNX) in December 2025 (see full year).

One-Way flights

01 Dec AirAsia X
03 Dec AirAsia X
05 Dec HK Express
18 Dec Malaysia Airlines
16 Dec China Airlines
22 Dec China Southern
17 Dec China Southern
25 Dec China Southern
26 Dec China Southern
24 Dec China Southern

Also check the deals for return flights from Seoul to Chiang Mai in December.

Skyscanner

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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