WN4038 San JoseSJC · 10:40 BoiseBOI · 13:15
WN4038 by Southwest Airlines flies from San Jose (SJC) to Boise (BOI) for the Mon, Sep 7 departure.
arrived at BOI · 16 min early
Where the minutes go
last 6 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 −9 min · 0 cancelled · 6 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SJC and BOI 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 San Jose to Boise flights today
same route · Southwest AirlinesIf WN4038 is cancelled, this is the other Southwest Airlines nonstop flight from San Jose to Boise on the same day, with scheduled departure times in SJC local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4038 actually runs
Pro Flight Search has tracked every published board update for WN4038 across the SJC and BOI boards: schedule changes, gate pushes and actual clocks. Usually lands ~9 min early. Based on 6 confirmed landings · 6/6 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how WN4038 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: N8608N, N8974K, N8644C, N8936Q.
Board clocks recorded as SJC and BOI published them.
Planning around WN4038? 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 — WN4038 San Jose to Boise on-time performance, measured from the SJC and BOI airport boards.
https://proflightsearch.com/flight/WN4038
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