ICN → CNXSeoul to Chiang Mai

live

Direct flights from Seoul (ICN) to Chiang Mai (CNX): 19 nonstop departures observed each week across 4 airlines. 28% of the last 18 operated flights arrived within 15 minutes of schedule. The median arrival is 22 minutes late. No cancellations were recorded across the 18 tracked flights. The nonstop covers 3,381 km, an estimated 4 hours 50 minutes in the air. Measured by Pro Flight Search from live flight boards at Seoul and Chiang Mai. Updated 10 September 2026 at 23:24 UTC.

ICN Seoul smooth · +13
CNX Chiang Mai tracking
3,381 km · ~4h 50m est.
dep bank 17:20–19:5519x weekly
Runs rough · 4 airlines · 19x weekly · nonstop
28% on time

of the last 18 operated ICN → CNX flights arrived within 15 minutes

Median arrival delay is +22 min. 0 of 18 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+22 minacross the last 18 operated legs
Flight time~4h 50mestimated from route distance
Weekly departures19x4 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 18

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air BusanEastar JetJeju AirJin Air

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Air BusanBX

Flights BX7475 19:55 We Th Sa Su

Eastar JetZE

Flights ZE517 18:30 We Th Sa Su

Jeju Air7C

Flights 7C2515 18:10 We Th Sa Su

Jin AirLJ0% on time

Flights LJ9 17:20 daily

History

operated legs · board outcomes
09-107C2515departed+37
09-10BX7475departed+23
09-10LJ9departed+138
09-10ZE517departed+23
09-097C2515departed+9
09-09LJ9departed+21
09-09ZE517departed+26
09-08LJ9departed+17
09-07LJ9departed+28
09-067C2515departed+11
09-06BX7475departed+17
09-06LJ9departed+21
09-06ZE517departed+15
09-057C2515departed+10
09-05BX7475departed+25
09-05LJ9departed+22
09-05ZE517departed+13
09-04LJ9departed+120

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
ICNSeoul +13 min smooth Full ICN delay board →
CNXChiang Mai tracking Full CNX delay board →

How the Seoul to Chiang Mai route actually runs

Pro Flight Search records official board updates for nonstop ICN to CNX flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Seoul (ICN) to Chiang Mai (CNX) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/ICN-CNX
How we measure this →

ICN to CNX questions

Is ICN–CNX running on time right now?

Smooth skies ahead. The departure side at ICN is the weaker end, route health score 82/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on ICN–CNX?

Operators schedule evening departures around 17:20 from ICN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the CNX delay card to confirm conditions when you'd arrive.

How long is the flight from ICN to CNX?

Great-circle distance is 3,381 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 269–320 min gate-to-gate on this route.

How often does ICN–CNX fly?

4 carriers operate this route, around 19 flights a week between them. Compare carrier days and times in the airline list above.