WN3972Southwest Airlines · SMF → SEA
live · 11m ago
Route confirmed Southwest Airlines

WN3972 SacramentoSMF · 05:05 SeattleSEA · 07:00

WN3972 by Southwest Airlines flies from Sacramento (SMF) to Seattle (SEA).

Right nowNext departure tomorrow Operates daily
05:05

scheduled from SMF

Typical gate push+10 minmedian posted departure

Where the minutes go

last 5 operations · gate push → arrival
0+30+60+90 min
10-30
+6 gate
10-29
+8 gate
10-26
+13 gate
10-23
+13 gate
10-22
+10 gate

The 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 operation

0 cancelled · 5 operations tracked

The route today

live boards
SMFSacramentoOn-time likelySMF delay board →
SEASeattleHigh riskSEA delay board →
SMF→SEAevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
0.8%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at SMF and SEA 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 Sacramento

Forecast

Thu 5 Nov, local date

High22°Clikely 21°C to 23°C
Low7°Clikely 6°C to 8°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 Seattle

Forecast

Thu 5 Nov, local date

High14°Clikely 12°C to 15°C
Low9°Clikely 7°C to 10°C
  • 72% 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 Sacramento to Seattle flights today

same route · Southwest Airlines
WN4050departs 05:05
WN2514departs 06:25
WN3754departs 06:30
WN3980departs 06:30
WN3594departs 07:50
WN3755departs 11:35

If WN3972 is cancelled, these are the other Southwest Airlines nonstop flights from Sacramento to Seattle on the same day, with scheduled departure times in SMF 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 WN3972 actually runs

Pro Flight Search has tracked every published board update for WN3972 across the SMF and SEA boards: schedule changes, gate pushes and actual clocks. Usually departs ~8 min late. Based on 5 confirmed departures · 5/5 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how WN3972 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-30SMF 05:05 05:11 (+6)SEA 07:00
10-29SMF 05:05 05:13 (+8)SEA 07:00
10-26SMF 05:05 05:18 (+13)SEA 07:00
10-23SMF 05:05 05:18 (+13)SEA 07:00
10-22SMF 05:05 05:15 (+10)SEA 07:00

Aircraft

Recent tails: N8777Q, N8971L, N8997Q, N8886C.

Board clocks recorded as SMF and SEA published them.

Planning around WN3972? 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: WN3972 Sacramento to Seattle on-time performance, measured from the SMF and SEA airport boards.

Canonical URL
https://proflightsearch.com/flight/WN3972
How we measure this →