UA861 WashingtonIAD · 22:35 São PauloGRU · 09:30
UA861 by United Airlines flies from Washington (IAD) to São Paulo (GRU) for the Fri, Sep 18 departure.
arrival expected at GRU · 13 min early
board checked 246m ago · checking again in 45s
⚖ UA861 typically leaves +36 and lands −8. 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 −8 min · 0 cancelled · 12 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at IAD and GRU 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 UA861 actually runs
Pro Flight Search has tracked every published board update for UA861 across the IAD and GRU boards: schedule changes, gate pushes and actual clocks. Usually departs ~36 min late. Based on 12 confirmed departures · 1/12 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA861 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: N76054, N67052, N69063, N67058.
Board clocks recorded as IAD and GRU published them.
Planning around UA861? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA861 Washington to São Paulo on-time performance, measured from the IAD and GRU airport boards.
https://proflightsearch.com/flight/UA861
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