Cheapest one-way flights from Seoul to Chiang Mai in May from $84

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

One-Way flights

13 May Thai VietJet Air
10 May Eastar Jet direct
16 May Eastar Jet direct
28 May Thai AirAsia X
06 May Air Busan direct
25 May Thai VietJet Air
11 May Thai VietJet Air
28 May Eastar Jet direct
24 May Air Busan direct
09 May Eastar Jet direct

Also check the deals for return 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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