# Who flies Chiang Mai → Seoul (any) nonstop?

**6 airlines fly Chiang Mai → Seoul (any) nonstop: Air Busan (ICN seasonal), Eastar Jet (ICN), Jeju Air (ICN), Jin Air (ICN), Korean Air (ICN) and Trinity Airways (ICN starts 7 Jan 2027).**

| Airline | Routes | Book direct |
|---|---|---|
| Air Busan | Chiang Mai (CNX) → Incheon (ICN) (Seasonal) | http://www.airbusan.com |
| Eastar Jet | Chiang Mai (CNX) → Incheon (ICN) | https://main.eastarjet.com |
| Jeju Air | Chiang Mai (CNX) → Incheon (ICN) | http://www.jejuair.net |
| Jin Air | Chiang Mai (CNX) → Incheon (ICN) | http://www.jinair.com/ |
| Korean Air | Chiang Mai (CNX) → Incheon (ICN) | https://www.koreanair.com/ |
| Trinity Airways | Chiang Mai (CNX) → Incheon (ICN) (Starts 7 Jan 2027) | https://www.trinityairways.com/app/main |

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Compare fares for CNX-ICN: [Trip.com](https://www.trip.com/flights/chiang-mai-to-seoul/tickets-CNX-ICN/?allianceid=1094387&sid=2209817&trip_sub1=c4c6f3cbcbb845d69061b1005-713359) · [Aviasales](https://www.aviasales.com/search/CNX0911ICN1?marker=713359). Affiliate links (Trip.com, Aviasales): picktheflight may earn a commission. It never changes the price or which airlines are listed.

On picktheflight: https://picktheflight.com/?from=CNX&to=@seoul · JSON: https://picktheflight.com/intents/CNX/@seoul

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Data built 2026-10-12 from airline schedule tables on Wikipedia ("Airlines and destinations"), matched by exact airport article; airline booking sites from Wikidata. Schedules change. Confirm the flight on the airline's own site before booking.