WN4870 San DiegoSAN · 17:30 San JoseSJC · 18:55
WN4870 by Southwest Airlines flies from San Diego (SAN) to San Jose (SJC).
scheduled from SAN
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 boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SAN and SJC 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 San Diego
ForecastThu 5 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.
Tomorrow at San Jose
ForecastThu 5 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 San Diego to San Jose flights today
same route · Southwest AirlinesIf WN4870 is cancelled, these are the other Southwest Airlines nonstop flights from San Diego to San Jose on the same day, with scheduled departure times in SAN 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 WN4870 actually runs
Pro Flight Search has tracked every published board update for WN4870 across the SAN and SJC boards: schedule changes, gate pushes and actual clocks. Usually lands ~19 min late. Based on 4 confirmed landings · 1/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how WN4870 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: N9025R, N8999Q, N7878A.
Board clocks recorded as SAN and SJC published them.
Planning around WN4870? 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: WN4870 San Diego to San Jose on-time performance, measured from the SAN and SJC airport boards.
https://proflightsearch.com/flight/WN4870
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