WN3900 Santa RosaSTS San DiegoSAN · 07:45
WN3900 by Southwest Airlines flies from Santa Rosa (STS) to San Diego (SAN).
scheduled from STS
Where the minutes go
last 4 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 boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How WN3900 actually runs
Pro Flight Search has tracked every published board update for WN3900 across the STS and SAN boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how WN3900 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as STS and SAN published them.
Planning around WN3900? 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 — WN3900 Santa Rosa to San Diego on-time performance, measured from the STS and SAN airport boards.
https://proflightsearch.com/flight/WN3900
.