Cheapest return flights from Seoul to Chiang Mai in May from $305

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

29 May - 11 Jun VietJet Air
30 May - 03 Jun China Eastern
31 May - 22 Jun Malaysia Airlines
30 May - 07 Jun China Southern
31 May - 05 Jun Jeju Air direct
29 May - 27 Jun Thai AirAsia X
30 May - 01 Jun EVA Air
29 May - 26 Jun EVA Air
30 May - 09 Jun EVA Air
30 May - 15 Jun EVA Air
29 May - 29 May Thai AirAsia X
29 May - 31 May Jeju Air direct
30 May - 31 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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