WN3439 AustinAUS · 18:30 San FranciscoSFO · 20:20
WN3439 by Southwest Airlines flies from Austin (AUS) to San Francisco (SFO).
scheduled from AUS
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at AUS and SFO are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Austin to San Francisco flights today
same route · Southwest AirlinesIf WN3439 is cancelled, these are the other Southwest Airlines nonstop flights from Austin to San Francisco on the same day, with scheduled departure times in AUS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN3439 actually runs
Pro Flight Search has tracked every published board update for WN3439 across the AUS and SFO boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left heavily delayed (~154 min) but landed right on schedule. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN3439 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: N8577Z, N8959Q, N8669B.
Board clocks recorded as AUS and SFO published them.
Planning around WN3439? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN3439 Austin to San Francisco on-time performance, measured from the AUS and SFO airport boards.
https://proflightsearch.com/flight/WN3439
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