UA3906 San FranciscoSFO · 08:00 DenverDEN
UA3906 by United Airlines flies from San Francisco (SFO) to Denver (DEN).
scheduled from SFO
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by SFO (San Francisco), currently flying MVFR (marginal visual). 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.
Other San Francisco to Denver flights today
same route · United AirlinesIf UA3906 is cancelled, these are the other United Airlines nonstop flights from San Francisco to Denver on the same day, with scheduled departure times in SFO local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA3906 actually runs
Pro Flight Search has tracked every published board update for UA3906 across the SFO and DEN boards: schedule changes, gate pushes and actual clocks. Combined risk score: 62.0/100. Based on airport operations, weather, and cached board history at SFO and DEN.
The verdict above is that record speaking, so it reflects how UA3906 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 SFO and DEN published them.
Planning around UA3906? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA3906 San Francisco to Denver on-time performance, measured from the SFO and DEN airport boards.
https://proflightsearch.com/flight/UA3906
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