UA857United Airlines · SFO → PVG
live · 9m 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 Fri, Nov 13 departure.

Right nowDelayed · gate G7
15:00

departs SFO · 125 min late

Typical gate push−1 minmedian posted departure
Typical arrival−36 minmedian over 3 operations
Wins back in air~35 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
11-12
−1 gate · −47 arrival
11-11
+2 gate · −36 arrival
11-10
−5 gate · −17 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 FranciscoOn-time likelySFO delay board →
PVGShanghaiOn-time likelyPVG delay board →
SFO→PVGevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
52%Chance of 15+ min delay
0.9%Chance of cancellation
+24 minTypical airport delay in this weather

Driven mainly by SFO (San Francisco), currently flying MVFR (marginal visual). 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

Sat 14 Nov, local date

High18°Clikely 17°C to 19°C
Low12°Clikely 10°C to 13°C
  • 71% chance of rain

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

Sun 15 Nov, local date

High19°Clikely 18°C to 21°C
Low15°Clikely 12°C to 16°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. Early read: no clear pattern yet. Only 3 completed legs so far: left right on schedule but landed about 36 min early. Not enough to call it.

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
11-12SFO 12:55 12:54 (−1)PVG 18:45 17:58 (−47)
11-11SFO 12:55 12:57 (+2)PVG 18:45 18:09 (−36)
11-10SFO 12:55 12:50 (−5)PVG 18:45 18:28 (−17)

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 →