# Who flies Seoul Incheon → Chiang Mai nonstop?

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

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

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Compare fares for ICN-CNX: [Trip.com](https://www.trip.com/flights/seoul-to-chiang-mai/tickets-ICN-CNX/?allianceid=1094387&sid=2209817&trip_sub1=c4c6f3cbcbb845d69061b1005-713359) · [Aviasales](https://www.aviasales.com/search/ICN1011CNX1?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=ICN&to=CNX · JSON: https://picktheflight.com/intents/ICN/CNX

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Data built 2026-10-19 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.