WN4789 HoustonHOU · 22:30 ChicagoMDW · 22:20
WN4789 by Southwest Airlines flies from Houston (HOU) to Chicago (MDW) for the Sun, Oct 11 departure.
departs HOU · on schedule
board checked 52m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at HOU 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 departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Houston to Chicago flights today
same route · Southwest AirlinesIf WN4789 is cancelled, these are the other Southwest Airlines nonstop flights from Houston to Chicago on the same day, with scheduled departure times in HOU local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4789 actually runs
Pro Flight Search has tracked every published board update for WN4789 across the HOU and MDW boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left noticeably late (~32 min) but landed a little late (~20 min). Not enough to call it.
The verdict above is that record speaking, so it reflects how WN4789 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as HOU and MDW published them.
Planning around WN4789? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN4789 Houston to Chicago on-time performance, measured from the HOU and MDW airport boards.
https://proflightsearch.com/flight/WN4789
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