Route guide

Seoul to Chiang Mai (ICN-CNX): Nonstop Upgrade & Award Space

Hahn Air Systems, Arcus-Air Logistic, Coyne Aviation, Korean Air, and Air Busan fly nonstop between Seoul (ICN) and Chiang Mai (CNX), roughly 29 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every ICN to CNX departure, so you know which flights have space before you book.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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29
Nonstop flights a week
2,101 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every ICN to CNX departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Seoul to Chiang Mai to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each ICN to CNX departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See ICN to CNX on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seoul to Chiang Mai nonstop

Carriers operating ICN to CNX nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Hahn Air Systems
  • Arcus-Air Logistic
  • Coyne Aviation
  • Korean Air
  • Air Busan
See ICN to CNX on the interactive map →

Frequently asked questions about ICN to CNX

How far is Chiang Mai from Seoul?
ICN to CNX covers about 2,101 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from ICN to CNX?
Hahn Air Systems, Arcus-Air Logistic, Coyne Aviation, Korean Air, and Air Busan fly the route nonstop. 2LNR tracks confirmed upgrade and award space on each of them.
How many flights a week are there from ICN to CNX?
About 29 nonstop flights a week run between Seoul and Chiang Mai in the current schedule, operated by Hahn Air Systems, Arcus-Air Logistic, Coyne Aviation, Korean Air, and Air Busan. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on ICN to CNX?
Open the ICN to CNX calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Seoul to Chiang Mai route, and 2LNR will notify you when space opens. It's free to start.

Never miss ICN to CNX upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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