DL166 TokyoHND · 16:20 SeattleSEA · 09:35
DL166 by Delta Air Lines flies from Tokyo (HND) to Seattle (SEA) for the Wed, Sep 23 departure.
departs HND · 220 min late
board checked 5m ago · checking again in 45s
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 operation1 cancelled · 7 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at HND and SEA 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.
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 DL166 actually runs
Pro Flight Search has tracked every published board update for DL166 across the HND and SEA boards: schedule changes, gate pushes and actual clocks. Usually departs on time. Based on 6 confirmed departures · 5/6 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how DL166 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 HND and SEA published them.
Planning around DL166? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL166 Tokyo to Seattle on-time performance, measured from the HND and SEA airport boards.
https://proflightsearch.com/flight/DL166
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