WN3961Southwest Airlines · SMF → MDW
live · 11m ago
Route confirmed Southwest Airlines

WN3961 SacramentoSMF · 15:40 ChicagoMDW · 19:15

WN3961 by Southwest Airlines flies from Sacramento (SMF) to Chicago (MDW) for the Mon, Oct 19 departure.

Same number through SMF → PHX → MDW

Right nowExpected in Chicago · Now 7:47 PM
19:47

arrival expected at MDW · 32 min late

Typical gate push+74 minmedian posted departure

The route today

live boards
SMFSacramentoOn-time likelySMF delay board →
MDWChicagoOn-time likelyMDW delay board →
SMF→MDWevery 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
0.9%Chance of cancellation
+8 minAvg hub delay right now

Conditions at SMF and MDW are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →

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 Chicago flights today

same route · Southwest Airlines
WN3959departs 05:10
WN3993departs 07:20
WN3272departs 08:30
WN2211departs 08:45
WN1211departs 10:20
WN1280departs 11:10

If WN3961 is cancelled, these are the other Southwest Airlines nonstop flights from Sacramento to Chicago on the same day, with scheduled departure times in SMF local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN3961 actually runs

Pro Flight Search has tracked every published board update for WN3961 across the SMF and MDW boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left heavily delayed (~64 min) but landed heavily delayed (~53 min). Not enough to call it.

The verdict above is that record speaking, so it reflects how WN3961 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
10-17SMF 15:40 16:54 (+74)MDW

Aircraft

Recent tails: N8901Q.

Board clocks recorded as SMF and MDW published them.

Planning around WN3961? 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 — WN3961 Sacramento to Chicago on-time performance, measured from the SMF and MDW airport boards.

Canonical URL
https://proflightsearch.com/flight/WN3961
How we measure this →