WN8637Southwest Airlines · MKE → MDW
live · 39m ago
Route confirmed Southwest Airlines

WN8637 MilwaukeeMKE ChicagoMDW · 23:05

WN8637 by Southwest Airlines flies from Milwaukee (MKE) to Chicago (MDW).

Right nowNext departure Thursday Operates Thu Sat
16:57

scheduled from MKE

Typical arrival+103 minmedian over 1 operations

The route today

live boards
MKEMilwaukeeOn-time likelyMKE delay board →
MDWChicagoOn-time likelyMDW delay board →
MKE→MDWevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
44%Chance of 15+ min delay
1.2%Chance of cancellation
+12 minAvg hub delay right now

Conditions at MKE 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 Milwaukee to Chicago flights today

same route · Southwest Airlines
WN564departs 05:45
WN2910departs 05:55
WN3869departs 06:00
WN2508departs 06:10
WN4159departs 06:40
WN220departs 15:10

If WN8637 is cancelled, these are the other Southwest Airlines nonstop flights from Milwaukee to Chicago on the same day, with scheduled departure times in MKE local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN8637 actually runs

Pro Flight Search has tracked every published board update for WN8637 across the MKE and MDW boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed +103 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how WN8637 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-10MKE MDW 23:05 00:48 (+103)

Board clocks recorded as MKE and MDW published them.

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 — WN8637 Milwaukee to Chicago on-time performance, measured from the MKE and MDW airport boards.

Canonical URL
https://proflightsearch.com/flight/WN8637
How we measure this →