WN3691Southwest Airlines · SAN → SMF
live · 6m ago
Route confirmed Southwest Airlines

WN3691 San DiegoSAN SacramentoSMF

WN3691 by Southwest Airlines flies from San Diego (SAN) to Sacramento (SMF).

Right nowNext departure today Operates daily
21:55

scheduled from SAN

The route today

live boards
SANSan DiegoHigh riskSAN delay board →
SMFSacramentoHigh riskSMF delay board →
SAN→SMFevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
53%Chance of 15+ min delay
0.8%Chance of cancellation
+17 minTypical airport delay in this weather

Conditions at SAN and SMF 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

Forecast

Sun 15 Nov, local date

High23°Clikely 21°C to 24°C
Low15°Clikely 13°C to 16°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 SMF

Forecast

Sun 15 Nov, local date

High16°Clikely 15°C to 18°C
Low10°Clikely 8°C to 11°C
  • 97% 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 San Diego to Sacramento flights today

same route · Southwest Airlines
WN4664departs 06:30
WN4320departs 08:00
WN4718departs 09:00
WN4317departs 10:30
WN2836departs 11:00
WN594departs 11:35

If WN3691 is cancelled, these are the other Southwest Airlines nonstop flights from San Diego to Sacramento 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 WN3691 actually runs

Pro Flight Search has tracked every published board update for WN3691 across the SAN and SMF boards: schedule changes, gate pushes and actual clocks. Combined risk score: 63.4/100. Based on airport operations, weather, and cached board history at SAN and SMF.

The verdict above is that record speaking, so it reflects how WN3691 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around WN3691? 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: WN3691 San Diego to Sacramento on-time performance, measured from the SAN and SMF airport boards.

Canonical URL
https://proflightsearch.com/flight/WN3691
How we measure this →