Cheapest one-way flights from Seoul to Chiang Mai in December from $202

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

07 Dec HK Express
05 Dec HK Express
14 Dec Thai AirAsia X
20 Dec China Airlines
30 Dec China Airlines
23 Dec China Airlines
25 Dec China Airlines
26 Dec China Airlines
10 Dec Thai AirAsia X
11 Dec Thai AirAsia X

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

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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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