UA1 San FranciscoSFO · 22:40 SingaporeSIN · 06:15
UA1 by United Airlines flies from San Francisco (SFO) to Singapore (SIN) for the Sat, Sep 12 departure.
arrived at SIN · 11 min early
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 VFR (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 Singapore flights today
same route · United AirlinesIf UA1 is cancelled, these are the other United Airlines nonstop flights from San Francisco to Singapore 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 UA1 actually runs
Pro Flight Search has tracked every published board update for UA1 across the SFO and SIN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: left a little late (~11 min) but landed about 11 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA1 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 SIN published them.
Planning around UA1? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA1 San Francisco to Singapore on-time performance, measured from the SFO and SIN airport boards.
https://proflightsearch.com/flight/UA1
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