WN4142 ClevelandCLE · 19:20 St LouisSTL · 19:55
WN4142 by Southwest Airlines flies from Cleveland (CLE) to St Louis (STL) for the Fri, Sep 18 departure.
arrived at STL · 12 min early
⚖ WN4142 typically leaves +12 and lands −9. The air wins minutes back.Where the minutes go
last 7 operations · gate push → arrivalThe 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 operationmedian arrival −9 min · 0 cancelled · 12 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at CLE and STL 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 Cleveland to St Louis flights today
same route · Southwest AirlinesIf WN4142 is cancelled, these are the other Southwest Airlines nonstop flights from Cleveland to St Louis on the same day, with scheduled departure times in CLE local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4142 actually runs
Pro Flight Search has tracked every published board update for WN4142 across the CLE and STL boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min early. Based on 11 confirmed landings · 8/11 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how WN4142 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N8783L, N8584Z, N8847Q, N8944Q.
Board clocks recorded as CLE and STL published them.
Planning around WN4142? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — WN4142 Cleveland to St Louis on-time performance, measured from the CLE and STL airport boards.
https://proflightsearch.com/flight/WN4142
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