Cheapest return flights from Chiang Mai to Seoul in May from $265

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

Return flights

17 May - 21 May Thai AirAsia
27 May - 16 Jun Thai AirAsia
17 May - 23 May Thai AirAsia
20 May - 23 May Thai AirAsia
10 May - 21 May Thai AirAsia
11 May - 21 May Thai AirAsia
16 May - 21 May Thai AirAsia
10 May - 12 May Thai AirAsia
10 May - 15 May Thai AirAsia
10 May - 13 May Thai AirAsia
10 May - 16 May Thai AirAsia
29 May - 16 Jun Thai AirAsia
17 May - 02 Jun Thai AirAsia
20 May - 02 Jun Thai AirAsia
27 May - 02 Jun Thai AirAsia
23 May - 02 Jun Thai AirAsia
24 May - 02 Jun Thai AirAsia
25 May - 02 Jun Thai AirAsia
16 May - 02 Jun Thai AirAsia
29 May - 02 Jun Thai AirAsia

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

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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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