Route guide

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

Coyne Aviation, Hahn Air Systems, Arcus-Air Logistic, Korean Air, and Air Busan fly nonstop between Chiang Mai (CNX) and Seoul (ICN), 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 CNX to ICN 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 CNX to ICN 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 Chiang Mai to Seoul 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 CNX to ICN 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 CNX to ICN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Chiang Mai to Seoul nonstop

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

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

Frequently asked questions about CNX to ICN

How far is Seoul from Chiang Mai?
CNX to ICN 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 CNX to ICN?
Coyne Aviation, Hahn Air Systems, Arcus-Air Logistic, 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 CNX to ICN?
About 29 nonstop flights a week run between Chiang Mai and Seoul in the current schedule, operated by Coyne Aviation, Hahn Air Systems, Arcus-Air Logistic, 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 CNX to ICN?
Open the CNX to ICN calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Chiang Mai to Seoul route, and 2LNR will notify you when space opens. It's free to start.

Never miss CNX to ICN upgrade or award space

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

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