UA5905United Airlines · ONT → SFO
live · 19m ago
Route confirmed United Airlines

UA5905 OntarioONT San FranciscoSFO

UA5905 by United Airlines flies from Ontario (ONT) to San Francisco (SFO).

Right nowNext departure today Operates daily
16:20

scheduled from ONT

The route today

live boards
ONTOntarioOn-time likelyONT delay board →
SFOSan FranciscoOn-time likelySFO delay board →
ONT→SFOevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
48%Chance of 15+ min delay
0.6%Chance of cancellation
+12 minTypical airport delay in this weather

Conditions at ONT and SFO 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 on this route

Forecast

Ontario to San Francisco with United Airlines · Fri 30 Oct, local date

Outlook: about usual
Chance a departure leaves 60+ min late
18%1.0× usual

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 4 departures a day on this route with this airline. · 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.

Other Ontario to San Francisco flights today

same route · United Airlines
UA2363departs 06:00
UA1387departs 08:03
UA1601departs 09:01
UA432departs 09:25
UA5330departs 11:10
UA3929departs 11:17

If UA5905 is cancelled, these are the other United Airlines nonstop flights from Ontario to San Francisco on the same day, with scheduled departure times in ONT local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA5905 actually runs

Pro Flight Search has tracked every published board update for UA5905 across the ONT and SFO boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at ONT and SFO.

The verdict above is that record speaking, so it reflects how UA5905 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA5905? 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: UA5905 Ontario to San Francisco on-time performance, measured from the ONT and SFO airport boards.

Canonical URL
https://proflightsearch.com/flight/UA5905
How we measure this →