UA5440 San FranciscoSFO · 13:45 Santa AnaSNA · 15:26
UA5440 by United Airlines flies from San Francisco (SFO) to Santa Ana (SNA) for the Sun, Nov 1 departure.
arrived at SNA · 28 min late
Where the minutes go
last 5 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −11 min · 0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SFO and SNA 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
ForecastTue 3 Nov, local date
- 78% 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 Santa Ana
ForecastTue 3 Nov, local date
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 departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other San Francisco to Santa Ana flights today
same route · United AirlinesIf UA5440 is cancelled, these are the other United Airlines nonstop flights from San Francisco to Santa Ana on the same day, with scheduled departure times in SFO 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 UA5440 actually runs
Pro Flight Search has tracked every published board update for UA5440 across the SFO and SNA boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min late. Based on 4 confirmed landings · 2/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA5440 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N619UX, N84378, N621UX.
Board clocks recorded as SFO and SNA published them.
Planning around UA5440? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search: UA5440 San Francisco to Santa Ana on-time performance, measured from the SFO and SNA airport boards.
https://proflightsearch.com/flight/UA5440
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