Cheapest return flights from Chiang Mai to Seoul in September from 260€

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

20 Sep - 21 Sep Thai AirAsia
12 Sep - 21 Sep Thai AirAsia
12 Sep - 17 Sep Thai AirAsia
12 Sep - 20 Sep Thai AirAsia
02 Sep - 10 Sep Thai AirAsia
02 Sep - 07 Sep Thai AirAsia
02 Sep - 21 Sep Thai AirAsia
02 Sep - 17 Sep Thai AirAsia
02 Sep - 20 Sep Thai AirAsia
02 Sep - 06 Sep Thai AirAsia
20 Sep - 11 Oct Thai AirAsia
24 Sep - 11 Oct Thai AirAsia
24 Sep - 12 Oct Thai AirAsia
22 Sep - 11 Oct Thai AirAsia
22 Sep - 12 Oct Thai AirAsia
28 Sep - 18 Oct Thai AirAsia
28 Sep - 19 Oct Thai AirAsia
28 Sep - 11 Oct Thai AirAsia
28 Sep - 12 Oct Thai AirAsia
21 Sep - 11 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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