DL3904 TucsonTUS · 12:29 Los AngelesLAX · 14:14
DL3904 by Delta Air Lines flies from Tucson (TUS) to Los Angeles (LAX).
scheduled from TUS
Where the minutes go
last 5 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 −21 min · 0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at TUS and LAX 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 Tucson to Los Angeles flights today
same route · Delta Air LinesIf DL3904 is cancelled, these are the other Delta Air Lines nonstop flights from Tucson to Los Angeles on the same day, with scheduled departure times in TUS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL3904 actually runs
Pro Flight Search has tracked every published board update for DL3904 across the TUS and LAX boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 5 confirmed landings · 4/5 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 DL3904 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: N307SY, N247SY, N315SY, N259SY.
Board clocks recorded as TUS and LAX published them.
Planning around DL3904? 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 — DL3904 Tucson to Los Angeles on-time performance, measured from the TUS and LAX airport boards.
https://proflightsearch.com/flight/DL3904
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