Cheapest return flights from Seoul to Chiang Mai in April from $212

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

Return flights

23 Apr - 07 May Eastar Jet direct
22 Apr - 07 May Eastar Jet direct
26 Apr - 07 May Eastar Jet direct
26 Apr - 14 May Eastar Jet direct
23 Apr - 21 May Jeju Air direct
02 Apr - 07 May Jeju Air direct
04 Apr - 23 Apr Eastar Jet direct
26 Apr - 21 May Jeju Air direct
02 Apr - 08 Apr Jeju Air direct
05 Apr - 23 Apr Eastar Jet direct
02 Apr - 25 Apr Jeju Air direct
25 Apr - 21 May Jeju Air direct
25 Apr - 07 May Jeju Air direct
23 Apr - 25 Apr Jeju Air direct
08 Apr - 15 Apr Thai AirAsia X
20 Apr - 27 Apr Thai AirAsia X
02 Apr - 06 Apr Thai AirAsia X
23 Apr - 13 May Eastar Jet direct
01 Apr - 22 Apr Jeju Air direct
20 Apr - 26 Apr Thai AirAsia X

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

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