Cheapest return flights from Seoul to Chiang Mai in May from $206

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

10 May - 15 May Jeju Air direct
10 May - 11 May Jeju Air direct
25 May - 12 Jun Jeju Air direct
10 May - 12 Jun Jeju Air direct
16 May - 20 May AirAsia X
14 May - 21 May Eastar Jet
15 May - 20 May Thai AirAsia X
17 May - 20 May Thai AirAsia X
22 May - 26 May Eastar Jet
20 May - 29 May Thai AirAsia X
28 May - 01 Jun Thai AirAsia X
18 May - 22 May Thai AirAsia X
13 May - 18 May Thai AirAsia X
22 May - 14 Jun Jeju Air direct
14 May - 19 Jun Eastar Jet
28 May - 04 Jun Jeju Air direct
22 May - 04 Jun Jeju Air direct
25 May - 26 Jun Jeju Air direct
26 May - 02 Jun Thai AirAsia X
17 May - 12 Jun Jeju Air direct

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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