Cheapest return flights from Seoul to Chiang Mai in July from $253

AirHint found the following cheapest return flights from Seoul (ICN) to Chiang Mai (CNX) in July 2025 (see full year).

Return flights

10 Jul - 16 Jul AirAsia X
12 Jul - 19 Jul Jin Air direct
09 Jul - 11 Jul Jeju Air direct
11 Jul - 19 Jul Jeju Air direct
23 Jul - 26 Jul Eastar Jet direct
21 Jul - 24 Jul Thai AirAsia X
07 Jul - 19 Jul AirAsia X
17 Jul - 29 Jul Thai AirAsia X
16 Jul - 19 Jul Jeju Air direct
09 Jul - 15 Jul Jeju Air direct
17 Jul - 11 Aug Thai AirAsia X
30 Jul - 13 Aug China Eastern
21 Jul - 11 Aug Thai AirAsia X
25 Jul - 24 Aug Jeju Air direct
29 Jul - 12 Aug Eastar Jet direct
23 Jul - 20 Aug Jin Air direct
07 Jul - 02 Aug AirAsia X
21 Jul - 20 Aug Jin Air direct
23 Jul - 12 Aug Jin Air direct
22 Jul - 20 Aug China Southern

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

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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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