UA4178 AshevilleAVL · 17:43 Knoxville/MaryvilleTYS · 19:55
UA4178 by United Airlines flies from Asheville (AVL) to Knoxville/Maryville (TYS).
Same number through AVL → EWR → TYS
scheduled from AVL
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 · 10 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at AVL and TYS 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
ForecastAsheville to New York with United Airlines · Fri 30 Oct, local date
- Chance a departure leaves 60+ min late
- 13%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 1 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 Asheville to Knoxville/Maryville flights today
same route · United AirlinesIf UA4178 is cancelled, this is the other United Airlines nonstop flight from Asheville to Knoxville/Maryville on the same day, with scheduled departure times in AVL 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 UA4178 actually runs
Pro Flight Search has tracked every published board update for UA4178 across the AVL and TYS boards: schedule changes, gate pushes and actual clocks. Usually lands ~12 min early. Based on 11 confirmed landings · 7/11 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 UA4178 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: N559GJ, N526GJ, N544GJ, N503GJ.
Board clocks recorded as AVL and TYS published them.
Planning around UA4178? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search: UA4178 Asheville to Knoxville/Maryville on-time performance, measured from the AVL and TYS airport boards.
https://proflightsearch.com/flight/UA4178
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