WE531 SeoulICN · 10:35 SapporoCTS · 13:10
WE531 by Thai Smile flies from Seoul (ICN) to Sapporo (CTS) for the Wed, Sep 9 departure.
arrived at CTS · 3 min late
⚖ WE531 typically leaves +18 and lands +4. The air wins minutes back.Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival +4 min · 0 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at ICN and CTS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How WE531 actually runs
Pro Flight Search has tracked every published board update for WE531 across the ICN and CTS boards: schedule changes, gate pushes and actual clocks. Usually lands ~9 min late. Based on 14 confirmed landings · 9/14 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how WE531 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as ICN and CTS published them.
Planning around WE531? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WE531 Seoul to Sapporo on-time performance, measured from the ICN and CTS airport boards.
https://proflightsearch.com/flight/WE531
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