UA870 SydneySYD · 10:20 San FranciscoSFO · 06:50
UA870 by United Airlines flies from Sydney (SYD) to San Francisco (SFO) for the Wed, Aug 19 departure.
departs SYD · on schedule
board checked 11m 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 operationmedian arrival +39 min · 0 cancelled · 7 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SYD and SFO 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 UA870 actually runs
Pro Flight Search has tracked every published board update for UA870 across the SYD and SFO boards: schedule changes, gate pushes and actual clocks. Usually lands ~39 min late. Based on 7 confirmed landings · 2/7 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA870 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 SYD and SFO published them.
Planning around UA870? 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 — UA870 Sydney to San Francisco on-time performance, measured from the SYD and SFO airport boards.
https://proflightsearch.com/flight/UA870
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