DL4989 DetroitDTW · 16:44 Knoxville/MaryvilleTYS
DL4989 by Delta Air Lines flies from Detroit (DTW) to Knoxville/Maryville (TYS) for the Thu, Oct 29 departure.
en route from DTW to TYS
board checked 120m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 16:56 · typical taxi-out at DTW ≈ 7 min.
Where the minutes go
last 7 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 operation0 cancelled · 13 operations tracked
The route today
live boardsTomorrow on this route
ForecastDetroit to Knoxville/Maryville with Delta Air Lines · Sat 31 Oct, local date
- Chance a departure leaves 60+ min late
- 4.6%0.9× usual
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 3 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 Detroit to Knoxville/Maryville flights today
same route · Delta Air LinesIf DL4989 is cancelled, these are the other Delta Air Lines nonstop flights from Detroit to Knoxville/Maryville on the same day, with scheduled departure times in DTW 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 DL4989 actually runs
Pro Flight Search has tracked every published board update for DL4989 across the DTW and TYS boards: schedule changes, gate pushes and actual clocks. Usually departs ~12 min late. Based on 13 confirmed departures · 8/13 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how DL4989 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: N355CA, N655CA, N371CA, N668CA.
Board clocks recorded as DTW and TYS published them.
Planning around DL4989? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search: DL4989 Detroit to Knoxville/Maryville on-time performance, measured from the DTW and TYS airport boards.
https://proflightsearch.com/flight/DL4989
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