AirHint found the following cheapest one-way flights from Chiang Rai (CEI) to Seoul (ICN) in September 2025 (see full year).
One-Way flights
| 30 Sep | Thai VietJet Air | ||
| 21 Sep | Thai AirAsia | ||
| 14 Sep | Thai AirAsia | ||
| 13 Sep | Thai AirAsia | ||
| 18 Sep | Thai AirAsia | ||
| 12 Sep | Thai Airways |
Also check the deals for return flights from Chiang Rai to Seoul in September.
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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