UA804 TokyoHND · 15:45 WashingtonIAD · 15:35
UA804 by United Airlines flies from Tokyo (HND) to Washington (IAD) for the Fri, Sep 18 departure.
arrived at IAD · 58 min early
⚖ UA804 typically leaves +0 and lands −36. 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 −36 min · 0 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at HND and IAD 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 UA804 actually runs
Pro Flight Search has tracked every published board update for UA804 across the HND and IAD boards: schedule changes, gate pushes and actual clocks. Usually lands ~29 min early. Based on 14 confirmed landings · 12/14 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 UA804 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N227UA, N77019, N78003, N79011.
Board clocks recorded as HND and IAD published them.
Planning around UA804? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — UA804 Tokyo to Washington on-time performance, measured from the HND and IAD airport boards.
https://proflightsearch.com/flight/UA804
.