Cheapest return flights from Chiang Mai to Seoul in September from 274€

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

12 Sep - 21 Sep Thai AirAsia
12 Sep - 14 Sep Thai AirAsia
12 Sep - 20 Sep Thai AirAsia
12 Sep - 28 Sep Thai AirAsia
12 Sep - 13 Sep Thai AirAsia
12 Sep - 27 Sep Thai AirAsia
17 Sep - 21 Sep Thai AirAsia
17 Sep - 20 Sep Thai AirAsia
17 Sep - 28 Sep Thai AirAsia
17 Sep - 27 Sep Thai AirAsia
25 Sep - 12 Oct Thai AirAsia
25 Sep - 11 Oct Thai AirAsia
24 Sep - 12 Oct Thai AirAsia
24 Sep - 11 Oct Thai AirAsia
23 Sep - 12 Oct Thai AirAsia
23 Sep - 11 Oct Thai AirAsia
26 Sep - 12 Oct Thai AirAsia
26 Sep - 11 Oct Thai AirAsia
20 Sep - 11 Oct Thai AirAsia
29 Sep - 12 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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