WN4877 AustinAUS · 12:35 St LouisSTL · 14:40
WN4877 by Southwest Airlines flies from Austin (AUS) to St Louis (STL).
estimated arrival at STL · local time · ~63 min from now
position updated 4m ago · checking again in 90s
Live position · flown path, last 38 min
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 STL 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
ForecastSun 8 Nov, local date
- 95% 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 St Louis
ForecastSun 8 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 St Louis flights today
same route · Southwest AirlinesIf WN4877 is cancelled, these are the other Southwest Airlines nonstop flights from Austin to St Louis 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 WN4877 actually runs
Pro Flight Search has tracked every published board update for WN4877 across the AUS and STL boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: left heavily delayed (~52 min) but landed right on schedule. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN4877 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: N8578Q, N8948Q, N8815L.
Board clocks recorded as AUS and STL published them.
Planning around WN4877? 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: WN4877 Austin to St Louis on-time performance, measured from the AUS and STL airport boards.
https://proflightsearch.com/flight/WN4877
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