DL4921 AustinAUS · 10:22 Raleigh/DurhamRDU · 14:25
DL4921 by Delta Air Lines flies from Austin (AUS) to Raleigh/Durham (RDU) for the Sun, Nov 1 departure.
departs AUS · 668 min late
board checked 36m ago · checking again in 45s
Where the minutes go
last 6 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 −27 min · 0 cancelled · 6 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at AUS and RDU are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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
ForecastAustin to Raleigh/Durham with Delta Air Lines · Mon 2 Nov, local date
- Chance a departure leaves 60+ min late
- 6.4%0.6× usual
Forecast weather: 51% chance of fog at Austin
No cancellation outlook here: this airport's board does not publish cancellations reliably.
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 2 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 Austin to Raleigh/Durham flights today
same route · Delta Air LinesIf DL4921 is cancelled, this is the other Delta Air Lines nonstop flight from Austin to Raleigh/Durham on the same day, with scheduled departure times in AUS local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How DL4921 actually runs
Pro Flight Search has tracked every published board update for DL4921 across the AUS and RDU boards: schedule changes, gate pushes and actual clocks. Usually lands ~22 min early. 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 DL4921 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: N604LR, N920XJ, N296PQ, N833SK.
Board clocks recorded as AUS and RDU published them.
Planning around DL4921? 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: DL4921 Austin to Raleigh/Durham on-time performance, measured from the AUS and RDU airport boards.
https://proflightsearch.com/flight/DL4921
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