Cheapest return flights from Seoul to Chiang Mai in May from $249

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

AirHint found the following cheapest return flights from Seoul (ICN) to Chiang Mai (CNX) in May 2025 (see full year).

Return flights

31 May - 05 Jun Jeju Air direct
23 May - 05 Jun Thai AirAsia X
29 May - 05 Jun Thai AirAsia X
31 May - 19 Jun Thai AirAsia X
28 May - 05 Jun Thai AirAsia X
27 May - 05 Jun Thai AirAsia X
26 May - 05 Jun Thai AirAsia X
17 May - 05 Jun Thai AirAsia X
16 May - 05 Jun Thai AirAsia X
22 May - 05 Jun Thai AirAsia X
07 May - 27 May AirAsia X
07 May - 18 May AirAsia X
07 May - 26 May AirAsia X
07 May - 22 May AirAsia X
07 May - 16 May AirAsia X
07 May - 23 May AirAsia X
07 May - 21 May AirAsia X
07 May - 20 May AirAsia X
07 May - 25 May AirAsia X
07 May - 08 May AirAsia X

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