Cheapest return flights from Chiang Mai to Seoul in September from $471

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

AirHint found the following cheapest return flights from Chiang Mai (CNX) to Seoul (ICN) in September 2025 (see full year).

Return flights

01 Sep - 11 Sep Thai AirAsia
04 Sep - 11 Sep Thai AirAsia
09 Sep - 11 Sep Thai AirAsia
05 Sep - 11 Sep Thai AirAsia
22 Sep - 25 Sep AirAsia
11 Sep - 25 Sep Thai AirAsia
15 Sep - 25 Sep Thai AirAsia
01 Sep - 09 Sep Thai AirAsia
04 Sep - 09 Sep Thai AirAsia
04 Sep - 25 Sep Thai AirAsia
27 Sep - 18 Oct AirAsia
27 Sep - 09 Oct AirAsia
27 Sep - 10 Oct AirAsia
27 Sep - 01 Oct AirAsia
27 Sep - 06 Oct AirAsia
22 Sep - 09 Oct AirAsia
27 Sep - 13 Oct AirAsia
27 Sep - 14 Oct AirAsia
22 Sep - 10 Oct AirAsia
20 Sep - 09 Oct Thai AirAsia

Also check the deals for one-way flights from Chiang Mai to Seoul in September.

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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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