UA2721 Las VegasLAS · 18:10 San FranciscoSFO · 19:58
UA2721 by United Airlines flies from Las Vegas (LAS) to San Francisco (SFO) for the Fri, Nov 6 departure.
departs LAS · on schedule
board checked 4m ago · checking again in 45s
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at LAS and SFO are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →
Tomorrow at Las Vegas
ForecastSat 7 Nov, local date
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
Tomorrow at San Francisco
ForecastSat 7 Nov, local date
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Las Vegas to San Francisco flights today
same route · United AirlinesIf UA2721 is cancelled, these are the other United Airlines nonstop flights from Las Vegas to San Francisco on the same day, with scheduled departure times in LAS local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How UA2721 actually runs
Pro Flight Search has tracked every published board update for UA2721 across the LAS and SFO boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: left right on schedule but landed about 11 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA2721 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: N17427.
Board clocks recorded as LAS and SFO published them.
Planning around UA2721? 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: UA2721 Las Vegas to San Francisco on-time performance, measured from the LAS and SFO airport boards.
https://proflightsearch.com/flight/UA2721
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