WN4012Southwest Airlines · SNA → SJC
updated 7h ago
Route confirmed Southwest Airlines

WN4012 Santa AnaSNA San JoseSJC

WN4012 by Southwest Airlines flies from Santa Ana (SNA) to San Jose (SJC).

Right nowNext departure today Operates Mon Thu Fri Sat Sun
17:15

scheduled from SNA

The route today

live boards
SNASanta AnaModerate riskSNA delay board →
SJCSan JoseHigh riskSJC delay board →
SNA→SJCevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
0.7%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at SNA 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 SNA

Forecast

Mon 16 Nov, local date

High21°Clikely 19°C to 23°C
Low15°Clikely 14°C to 17°C

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 SJC

Forecast

Mon 16 Nov, local date

High15°Clikely 14°C to 17°C
Low10°Clikely 8°C to 12°C
  • 80% 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.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Santa Ana to San Jose flights today

same route · Southwest Airlines
WN4084departs 06:45
WN1791departs 07:20
WN3725departs 07:45
WN974departs 08:15
WN343departs 08:25
WN4085departs 09:50

If WN4012 is cancelled, these are the other Southwest Airlines nonstop flights from Santa Ana to San Jose on the same day, with scheduled departure times in SNA 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 WN4012 actually runs

Pro Flight Search has tracked every published board update for WN4012 across the SNA and SJC boards: schedule changes, gate pushes and actual clocks. Combined risk score: 42.1/100. Based on airport operations, weather, and cached board history at SNA and SJC.

The verdict above is that record speaking, so it reflects how WN4012 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around WN4012? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: WN4012 Santa Ana to San Jose on-time performance, measured from the SNA and SJC airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4012
How we measure this →