WN4397 HoustonHOU · 08:45 San DiegoSAN · 10:05
WN4397 by Southwest Airlines flies from Houston (HOU) to San Diego (SAN).
scheduled from HOU
Where the minutes go
last 3 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 HOU and SAN 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 on this route
ForecastHouston to San Diego with Southwest Airlines · Sun 1 Nov, local date
- Chance a departure leaves 60+ min late
- 14%1.3× usual
Forecast weather: 91% chance of rain at San Diego
No cancellation outlook here: this airport's board does not publish cancellations reliably.
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 3 departures a day on this route with this airline. · 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 Houston to San Diego flights today
same route · Southwest AirlinesIf WN4397 is cancelled, these are the other Southwest Airlines nonstop flights from Houston to San Diego on the same day, with scheduled departure times in HOU 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 WN4397 actually runs
Pro Flight Search has tracked every published board update for WN4397 across the HOU and SAN boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 1 completed leg so far: landed -11 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN4397 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 HOU and SAN published them.
Planning around WN4397? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search: WN4397 Houston to San Diego on-time performance, measured from the HOU and SAN airport boards.
https://proflightsearch.com/flight/WN4397
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