Cheapest return flights from Seoul to Chiang Mai in October from $218

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

Return flights

16 Oct - 22 Oct Vietnam Airlines
17 Oct - 23 Oct Vietnam Airlines
14 Oct - 18 Oct Jin Air direct
14 Oct - 20 Oct Jin Air direct
14 Oct - 22 Oct Jin Air direct
11 Oct - 18 Oct Jin Air direct
11 Oct - 20 Oct Jin Air direct
11 Oct - 22 Oct Jin Air direct
14 Oct - 30 Oct Jin Air direct
14 Oct - 16 Oct Jin Air direct
14 Oct - 04 Nov Jin Air
14 Oct - 03 Nov Jin Air direct
14 Oct - 02 Nov Jin Air direct
21 Oct - 20 Nov Jin Air direct
21 Oct - 18 Nov Jin Air direct
11 Oct - 10 Nov Jeju Air direct
16 Oct - 16 Nov Philippines AirAsia Inc.
18 Oct - 04 Nov Eastar Jet
24 Oct - 21 Nov VietJet Air
28 Oct - 04 Nov VietJet Air

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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