Cheapest return flights from Seoul to Chiang Mai in May from $202

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

Return flights

07 May - 14 May Eastar Jet direct
10 May - 14 May Eastar Jet direct
14 May - 10 Jun Eastar Jet direct
14 May - 21 May Eastar Jet direct
14 May - 28 May Jeju Air direct
17 May - 28 May Eastar Jet direct
27 May - 28 May Eastar Jet direct
16 May - 28 May Eastar Jet direct
09 May - 14 May Eastar Jet direct
17 May - 20 May Eastar Jet direct
13 May - 14 May Eastar Jet direct
31 May - 04 Jun Jin Air direct
06 May - 11 Jun Eastar Jet direct
29 May - 04 Jun Jin Air direct
31 May - 08 Jun Jin Air direct
26 May - 02 Jun Jin Air direct
25 May - 01 Jun Jin Air direct
26 May - 01 Jun Jin Air direct
31 May - 03 Jun Jin Air direct
31 May - 02 Jun Jin Air direct

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

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