AirHint found the following cheapest return flights from Chiang Rai (CEI) to Seoul (ICN) in January 2026 (see full year).

Return flights

06 Jan - 26 Jan	Thai AirAsia
20 Jan - 26 Jan	Thai AirAsia
20 Jan - 09 Feb	Thai AirAsia
06 Jan - 20 Jan	Thai AirAsia
31 Jan - 09 Feb	Thai AirAsia
27 Jan - 09 Feb	Thai AirAsia
10 Jan - 26 Jan	Thai AirAsia
10 Jan - 20 Jan	Thai AirAsia

Also check the deals for one-way flights from Chiang Rai to Seoul in January.

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 Rai to Seoul in January from 359€

Return flights