Cheapest return flights from Seoul to Chiang Mai in October from $254

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

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

Return flights

18 Oct - 21 Oct Jeju Air direct
12 Oct - 21 Oct Jeju Air direct
11 Oct - 16 Oct Jeju Air direct
13 Oct - 22 Oct Jeju Air direct
14 Oct - 21 Oct Jeju Air direct
19 Oct - 23 Oct Jeju Air direct
12 Oct - 25 Oct Jeju Air direct
11 Oct - 25 Oct Jeju Air direct
18 Oct - 25 Oct Jeju Air direct
11 Oct - 17 Oct Jeju Air direct
27 Oct - 01 Nov AirAsia X
29 Oct - 01 Nov AirAsia X
29 Oct - 18 Nov AirAsia X
27 Oct - 13 Nov AirAsia X
29 Oct - 13 Nov AirAsia X
27 Oct - 17 Nov AirAsia X
27 Oct - 10 Nov AirAsia X
29 Oct - 17 Nov AirAsia X
29 Oct - 10 Nov AirAsia X
27 Oct - 04 Nov AirAsia X

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

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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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