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

Return flights

03 Jul - 15 Jul	Thai AirAsia
11 Jul - 15 Jul	Thai AirAsia
09 Jul - 15 Jul	Thai AirAsia
03 Jul - 20 Jul	Thai AirAsia
11 Jul - 20 Jul	Thai AirAsia
09 Jul - 20 Jul	Thai AirAsia
11 Jul - 27 Jul	Thai AirAsia
11 Jul - 25 Jul	Thai AirAsia
09 Jul - 27 Jul	Thai AirAsia
09 Jul - 25 Jul	Thai AirAsia

Also check the deals for one-way flights from Chiang Mai to Seoul in July.

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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Cheapest return flights from Chiang Mai to Seoul in July from 384€

Return flights