AA4278 PhoenixPHX · 12:15 Salt Lake CitySLC · 15:01
AA4278 by American Airlines flies from Phoenix (PHX) to Salt Lake City (SLC).
scheduled from PHX
Where the minutes go
last 4 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 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 · American AirlinesIf AA4278 is cancelled, these are the other American 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 AA4278 actually runs
Pro Flight Search has tracked every published board update for AA4278 across the PHX and SLC boards: schedule changes, gate pushes and actual clocks. Usually departs ~19 min late. Based on 4 confirmed departures · 2/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AA4278 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 PHX and SLC published them.
Planning around AA4278? 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 — AA4278 Phoenix to Salt Lake City on-time performance, measured from the PHX and SLC airport boards.
https://proflightsearch.com/flight/AA4278
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