WN4121 PhoenixPHX Salt Lake CitySLC
WN4121 by Southwest Airlines flies from Phoenix (PHX) to Salt Lake City (SLC).
scheduled from PHX
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at PHX and SLC 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 Phoenix to Salt Lake City flights today
same route · Southwest AirlinesIf WN4121 is cancelled, these are the other Southwest Airlines nonstop flights from Phoenix to Salt Lake City on the same day, with scheduled departure times in PHX local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4121 actually runs
Pro Flight Search has tracked every published board update for WN4121 across the PHX and SLC boards: schedule changes, gate pushes and actual clocks. Combined risk score: 60.6/100. Based on airport operations, weather, and cached board history at PHX and SLC.
The verdict above is that record speaking, so it reflects how WN4121 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around WN4121? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN4121 Phoenix to Salt Lake City on-time performance, measured from the PHX and SLC airport boards.
https://proflightsearch.com/flight/WN4121
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