UA857United Airlines · SFO → PVG
live · 15m ago
Route confirmed United Airlines

UA857 San FranciscoSFO · 12:55 ShanghaiPVG · 18:45

UA857 by United Airlines flies from San Francisco (SFO) to Shanghai (PVG) for the Mon, Nov 9 departure.

Right nowOn Time · today
12:55

departs SFO · on schedule

Typical gate push−7 minmedian posted departure
Typical arrival−15 minmedian over 4 operations
Wins back in air~8 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
11-09
−15 arrival
11-08
−7 gate · −15 arrival
11-07
+9 gate · −20 arrival
11-06
−8 gate · −3 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
SFOSan FranciscoHigh riskSFO delay board →
PVGShanghaiOn-time likelyPVG delay board →
SFO→PVGevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
35%Chance of 15+ min delay
0.4%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at SFO and PVG 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 San Francisco

Forecast

Tue 10 Nov, local date

High21°Clikely 20°C to 23°C
Low13°Clikely 12°C to 15°C

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 Shanghai

Forecast

Tue 10 Nov, local date

High15°Clikely 14°C to 16°C
Low9°Clikely 7°C to 10°C

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 departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How UA857 actually runs

Pro Flight Search has tracked every published board update for UA857 across the SFO and PVG boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how UA857 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-09SFO 12:55PVG 18:45 18:30 (−15)
11-08SFO 12:55 12:48 (−7)PVG 18:45 18:30 (−15)
11-07SFO 12:55 13:04 (+9)PVG 18:45 18:25 (−20)
11-06SFO 12:55 12:47 (−8)PVG 18:45 18:42 (−3)

Board clocks recorded as SFO and PVG published them.

Planning around UA857? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: UA857 San Francisco to Shanghai on-time performance, measured from the SFO and PVG airport boards.

Canonical URL
https://proflightsearch.com/flight/UA857
How we measure this →