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

Return flights

12 Nov - 19 Nov	HK Express
12 Nov - 22 Nov	Eastar Jet
12 Nov - 24 Nov	Eastar Jet
12 Nov - 17 Nov	Eastar Jet
12 Nov - 18 Nov	HK Express
12 Nov - 30 Nov	Eastar Jet
10 Nov - 22 Nov	Jin Air
10 Nov - 24 Nov	Jin Air
10 Nov - 17 Nov	Jin Air
12 Nov - 18 Nov	Eastar Jet	direct
26 Nov - 16 Dec	Jin Air
28 Nov - 16 Dec	Jin Air
24 Nov - 01 Dec	HK Express
18 Nov - 09 Dec	HK Express
12 Nov - 02 Dec	Eastar Jet
26 Nov - 10 Dec	Jin Air	direct
26 Nov - 09 Dec	Jin Air	direct
20 Nov - 10 Dec	Jin Air	direct
20 Nov - 09 Dec	Jin Air	direct
27 Nov - 06 Dec	HK Express

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

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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Cheapest return flights from Chiang Mai to Seoul in November from 195€

Return flights