Cheapest return flights from Chiang Mai to Seoul in September from $221

AirHint found the following cheapest return flights from Chiang Mai (CNX) to Seoul (ICN) in September 2026 (see full year).

Return flights

03 Sep - 05 Sep Eastar Jet direct
03 Sep - 06 Sep Eastar Jet direct
09 Sep - 12 Sep Thai AirAsia
10 Sep - 16 Sep Eastar Jet direct
05 Sep - 06 Sep Eastar Jet direct
03 Sep - 16 Sep Eastar Jet direct
03 Sep - 10 Sep Eastar Jet direct
03 Sep - 09 Sep Eastar Jet direct
12 Sep - 16 Sep Eastar Jet direct
06 Sep - 16 Sep Eastar Jet direct
30 Sep - 07 Oct Thai AirAsia
30 Sep - 08 Oct Thai AirAsia
01 Sep - 31 Oct Thai AirAsia
20 Sep - 10 Oct Eastar Jet direct
19 Sep - 10 Oct Eastar Jet direct
30 Sep - 09 Oct Thai AirAsia
16 Sep - 04 Oct Eastar Jet direct
30 Sep - 17 Oct Eastar Jet direct
30 Sep - 18 Oct Eastar Jet direct
30 Sep - 15 Oct Eastar Jet 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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