WN4574 Long BeachLGB · 07:55 DenverDEN · 11:10
WN4574 by Southwest Airlines flies from Long Beach (LGB) to Denver (DEN).
scheduled from LGB
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at LGB and DEN 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 Long Beach to Denver flights today
same route · Southwest AirlinesIf WN4574 is cancelled, these are the other Southwest Airlines nonstop flights from Long Beach to Denver on the same day, with scheduled departure times in LGB local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4574 actually runs
Pro Flight Search has tracked every published board update for WN4574 across the LGB and DEN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: left a little late (~6 min) but landed about 11 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN4574 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: N915WN.
Board clocks recorded as LGB and DEN published them.
Planning around WN4574? 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 — WN4574 Long Beach to Denver on-time performance, measured from the LGB and DEN airport boards.
https://proflightsearch.com/flight/WN4574
.