KOREAN AIRLINESKE
Flights KE921 12:45 We Fr Su
live
Direct flights from Seoul (ICN) to Lisbon (LIS): 3 nonstop departures observed each week across 1 airline. The median arrival is 5 minutes early. No cancellations were recorded across the 3 tracked flights. The nonstop covers 10,396 km, an estimated 13 hours 50 minutes in the air. Measured by Pro Flight Search from live flight boards at Seoul and Lisbon. Updated 11 September 2026 at 03:19 UTC.
ICN
Seoul
busy · +21
LIS
Lisbon
smooth · +0
10,396 km · ~13h 50m est.
Running clean · 1 airline · 3x weekly · nonstop
86 / 100
route health from live ICN and LIS delay boards
Median arrival delay is −5 min. 0 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−5 minacross the last 3 operated legs
Flight time~13h 50mestimated from route distance
Weekly departures3x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
KOREAN AIRLINES
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 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at LIS: 30% odds of a 15+ minute delay and around +4 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Seoul to Lisbon route actually runs
Pro Flight Search records official board updates for nonstop ICN to LIS 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 Lisbon (LIS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ICN-LIS
ICN to LIS questions
Is ICN–LIS running on time right now?
Smooth skies ahead. The departure side at ICN is the weaker end, route health score 86/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from ICN to LIS?
Great-circle distance is 10,396 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 764–921 min gate-to-gate on this route.
How often does ICN–LIS fly?
KOREAN AIRLINES runs the route with about 3 flights a week (sun, wed, fri). 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 LIS, 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.
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