UA439 AustinAUS · 18:00 PhoenixPHX · 19:25
UA439 by United Airlines flies from Austin (AUS) to Phoenix (PHX) for the Sun, Nov 8 departure.
Same number through AUS → DEN → PHX
departs AUS · on schedule
board checked 6m ago · checking again in 45s
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at AUS and PHX 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 Austin
ForecastMon 9 Nov, local date
- 94% 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 Denver
ForecastMon 9 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 Austin to Phoenix flights today
same route · United AirlinesIf UA439 is cancelled, these are the other United Airlines nonstop flights from Austin to Phoenix on the same day, with scheduled departure times in AUS 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 UA439 actually runs
Pro Flight Search has tracked every published board update for UA439 across the AUS and PHX boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: left noticeably late (~35 min) but landed noticeably late (~21 min). Not enough to call it.
The verdict above is that record speaking, so it reflects how UA439 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: N33284, N77535, N37290.
Board clocks recorded as AUS and PHX published them.
Planning around UA439? 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: UA439 Austin to Phoenix on-time performance, measured from the AUS and PHX airport boards.
https://proflightsearch.com/flight/UA439
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