Cheapest return flights from Chiang Mai to Seoul in September from $179

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

11 Sep - 15 Sep Jin Air direct
10 Sep - 15 Sep Jin Air direct
04 Sep - 15 Sep Jin Air direct
05 Sep - 15 Sep Jin Air direct
08 Sep - 15 Sep Jin Air direct
03 Sep - 15 Sep Jin Air direct
17 Sep - 18 Sep Jin Air direct
17 Sep - 23 Sep Jin Air direct
11 Sep - 17 Sep Jin Air direct
11 Sep - 16 Sep Jin Air direct
26 Sep - 14 Oct Jin Air direct
26 Sep - 13 Oct Jin Air direct
23 Sep - 14 Oct Jin Air direct
23 Sep - 13 Oct Jin Air direct
24 Sep - 14 Oct Jin Air direct
24 Sep - 13 Oct Jin Air direct
25 Sep - 14 Oct Jin Air direct
25 Sep - 13 Oct Jin Air direct
30 Sep - 19 Oct Jin Air direct
30 Sep - 14 Oct Jin Air direct

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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