ICN → DMKSeoul to Bangkok

live

Direct flights from Seoul (ICN) to Bangkok (DMK): 7 nonstop departures observed each week across 1 airline. 50% of the last 16 operated flights arrived within 15 minutes of schedule. The median arrival is 6 minutes early. 7 of the 16 tracked flights were cancelled. The nonstop covers 3,657 km, an estimated 5 hours 11 minutes in the air. Measured by Pro Flight Search from live flight boards at Seoul and Bangkok. Updated 11 October 2026 at 04:53 UTC.

ICN Seoul busy · +17
DMK Bangkok smooth · +0
3,657 km · ~5h 11m est.
departs 12:057x weekly
Runs rough · 1 airline · 7x weekly · nonstop
50% on time

of the last 16 operated ICN → DMK flights arrived within 15 minutes

Median arrival delay is −6 min. 7 of 16 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−6 minacross the last 16 operated legs
Flight time~5h 11mestimated from route distance
Weekly departures7x1 direct airline on the leg
Cancelled43.8%recent route rate · 7 of 16

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Thai Air Asia

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
Thai Air AsiaFD89% on time

Flights FD678 12:05 daily

History

operated legs · board outcomes
10-11FD678departed+6
10-10FD678dep +5 → arr−16
10-10SL353cancelledCNX
10-09FD678dep +11 → arr−11
10-09FD7281dep +19 → arr−6
10-09SL353cancelledCNX
10-08FD678dep +6 → arr−10
10-08SL353cancelledCNX
10-07FD678dep +50 → arr+36
10-07SL353cancelledCNX
10-06FD678dep +1 → arr−1
10-06SL353cancelledCNX
10-05FD678dep +3 → arr−9
10-05SL353cancelledCNX
10-04FD678dep +8 → arr+5
10-04SL353cancelledCNX

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 +17 min busy Full ICN delay board →
DMKBangkok +0 min smooth 🌤 scattered clouds · E 7 kt Full DMK delay board →

Weather lens

Current conditions put the pressure at DMK: 24% odds of a 15+ minute delay and around +0 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Seoul to Bangkok route actually runs

Pro Flight Search records official board updates for nonstop ICN to DMK 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 Bangkok (DMK) route reliability, measured from operated flights on official airport boards.

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

ICN to DMK questions

Is ICN–DMK running on time right now?

Smooth skies ahead. The departure side at ICN is the weaker end, route health score 89/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from ICN to DMK?

Great-circle distance is 3,657 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 288–343 min gate-to-gate on this route.

How often does ICN–DMK fly?

Thai Air Asia runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at ICN and arrival-side delay at DMK, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.