WN1921 Salt Lake CitySLC · 21:25 PhoenixPHX · 22:10
WN1921 by Southwest Airlines flies from Salt Lake City (SLC) to Phoenix (PHX).
scheduled from SLC
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SLC and PHX 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 →
Tomorrow on this route
ForecastSalt Lake City to Phoenix with Southwest Airlines · Wed 28 Oct, local date
- Chance a departure leaves 60+ min late
- 7.2%0.8× usual
Forecast weather: 88% chance of rain at Salt Lake City
No cancellation outlook here: this airport's board does not publish cancellations reliably.
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 5 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Salt Lake City to Phoenix flights today
same route · Southwest AirlinesIf WN1921 is cancelled, these are the other Southwest Airlines nonstop flights from Salt Lake City to Phoenix on the same day, with scheduled departure times in SLC local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN1921 actually runs
Pro Flight Search has tracked every published board update for WN1921 across the SLC and PHX boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: left a little late (~8 min) but landed about 15 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN1921 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: N216WR, N7821L.
Board clocks recorded as SLC and PHX published them.
Planning around WN1921? 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 — WN1921 Salt Lake City to Phoenix on-time performance, measured from the SLC and PHX airport boards.
https://proflightsearch.com/flight/WN1921
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