WN4233Southwest Airlines · BOS → MDW
live · 16m ago
Route confirmed Southwest Airlines

WN4233 BostonBOS · 16:20 ChicagoMDW · 17:55

WN4233 by Southwest Airlines flies from Boston (BOS) to Chicago (MDW) for the Tue, Oct 20 departure.

Right nowOn Time · gate B31A
16:20

departs BOS · on schedule

Typical gate push+67 minmedian posted departure
Typical arrival+5 minmedian over 1 operations
Wins back in air~62 minmedian gate push vs arrival · how planes make up time →

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
MDWChicagoHigh riskMDW delay board →
BOS→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
2.9%Chance of cancellation
+9 minAvg hub delay right now

Conditions at BOS 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 Boston to Chicago flights today

same route · Southwest Airlines
WN805departs 05:50
WN4568departs 06:10
WN1955departs 07:05
WN1346departs 09:40
WN806departs 10:40
WN2046departs 10:55

If WN4233 is cancelled, these are the other Southwest Airlines nonstop flights from Boston to Chicago on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN4233 actually runs

Pro Flight Search has tracked every published board update for WN4233 across the BOS 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 (~67 min) but landed right on schedule. Not enough to call it.

The verdict above is that record speaking, so it reflects how WN4233 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
10-19BOS 18:35MDW 20:10 20:15 (+5)
10-18BOS 18:45 19:52 (+67)MDW

Board clocks recorded as BOS and MDW published them.

Planning around WN4233? 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 — WN4233 Boston to Chicago on-time performance, measured from the BOS and MDW airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4233
How we measure this →