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Flight Reliability

UA 4774 · United Airlines

Denver → Knoxville (DEN–TYS)84% of its flights flew this route. The rest (DEN–FSD, IAH–MKE) are included in these numbers.

77
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
8 min
Average arrival delay
0.6%
Cancelled
6 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

UA 4774 departing between 6–9 PM arrived on time 86% of the time, versus 64% between 6–9 AM.

Friday is doing you no favors.

UA 4774 arrived on time 81% of the time on Sundays and just 60% on Fridays. That gap is worth planning around.

A bit behind the DEN–TYS route.

UA 4774 arrived on time 71% of the time, versus 77% across the DEN–TYS route.

Lagging the United Airlines network.

UA 4774 arrived on time 71% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon69%(52 flights)
  • Tue78%(51 flights)
  • Wed77%(52 flights)
  • Thu70%(50 flights)
  • Fri60%(52 flights)
  • Sat62%(50 flights)
  • Sun81%(53 flights)
On-time by departure window
  • 6–9 AM64%(25 flights)
  • 3–6 PM71%(314 flights)
  • 6–9 PM86%(21 flights)
On-time trend by month
74%
May

Jun 63% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202542%31
August 202539%31
September 202573%30
October 202581%31
November 202586%28
December 202584%31
January 202676%29
February 202682%27
March 202674%31
April 202683%30
May 202674%31
Departures on time
77%
Diverted
0%
Flights flown
360
Months covered
12

Same route, other flights

Keep nerding

Based on 362 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.