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

03 Dec AirAsia X
01 Dec AirAsia X
05 Dec Malaysia Airlines
31 Dec China Southern
28 Dec Thai Airways
20 Dec Thai Airways
23 Dec China Southern
07 Dec Thai AirAsia X
04 Dec Thai AirAsia X
27 Dec Thai AirAsia X

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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