Cheapest one-way flights from Seoul to Chiang Mai in September from 79€

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

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

One-Way flights

28 Sep Eastar Jet direct
25 Sep AirAsia X
02 Sep AirAsia X
07 Sep Jeju Air direct
14 Sep Jeju Air direct
21 Sep Jeju Air direct
13 Sep Jeju Air direct
08 Sep Jeju Air direct
02 Sep Jeju Air direct
10 Sep Jeju Air direct

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

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