Cheapest one-way flights from Chiang Mai to Seoul in September from $109

AirHint found the following cheapest one-way flights from Chiang Mai (CNX) to Seoul (ICN) in September 2025 (see full year).

One-Way flights

25 Sep Jin Air direct
24 Sep Eastar Jet direct
18 Sep Jin Air direct
03 Sep Jin Air direct
17 Sep Eastar Jet direct
30 Sep Jin Air direct
07 Sep Eastar Jet direct
19 Sep Jin Air direct
14 Sep Jin Air direct
22 Sep Jin Air direct

Also check the deals for return flights from Chiang Mai to Seoul in September.

Skyscanner

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Feel free to contact us with any feedback or request another flight research.