UA3920United Airlines · SFO → GUM
live · 49m ago
Route confirmed United Airlines

UA3920 San FranciscoSFO HagåtñaGUM

UA3920 by United Airlines flies from San Francisco (SFO) to Hagåtña (GUM).

Right nowNext departure tomorrow Operates Tue Fri Sat
17:30

scheduled from SFO

The route today

live boards
SFOSan FranciscoOn-time likelySFO delay board →
GUMHagåtñaHigh riskGUM delay board →
SFO→GUMevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Early read, sample still building
30%Chance of 15+ min delay
1.0%Chance of cancellation
+12 minTypical airport delay in this weather

Conditions at SFO and GUM 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. This route has few tracked flights so far, so treat this as an early read.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at SFO

Forecast

Fri 30 Oct, local date

High19°Clikely 17°C to 20°C
Low13°Clikely 11°C to 14°C
Outlook: about usual
Chance a departure is cancelled
0.6%usually 0.5%
Chance a departure leaves 60+ min late
7.1%usually 7.2%

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · Based on about 1,910 departures a day. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at GUM

Forecast

Sat 31 Oct, local date

High30°Clikely 29°C to 31°C
Low26°Clikely 24°C to 27°C
  • 86% chance of rain

Forecast: WeatherTomorrow · 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 UA3920 actually runs

Pro Flight Search has tracked every published board update for UA3920 across the SFO and GUM boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at SFO and GUM.

The verdict above is that record speaking, so it reflects how UA3920 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3920? 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: UA3920 San Francisco to Hagåtña on-time performance, measured from the SFO and GUM airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3920
How we measure this →