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Flight Reliability

UA 5673 · United Airlines

Knoxville → Denver (TYS–DEN)91% of its flights flew this route. The rest (ORD–CHO, MTJ–DEN) are included in these numbers.

95
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
6 min early
Average arrival delay
0.8%
Cancelled
13 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

UA 5673 departing between 6–9 AM arrived on time 94% of the time, versus 82% between 3–6 PM.

Thursday is the weak spot.

UA 5673 arrived on time 94% of the time on Wednesdays. On Thursdays: 87%.

A bit ahead of the TYS–DEN route.

UA 5673 arrived on time 91% of the time, versus 84% across the TYS–DEN route.

Better than the United Airlines network average.

UA 5673 arrived on time 91% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon92%(52 flights)
  • Tue89%(52 flights)
  • Wed94%(51 flights)
  • Thu87%(52 flights)
  • Fri92%(49 flights)
  • Sat90%(51 flights)
  • Sun94%(51 flights)
On-time by departure window
  • 6–9 AM94%(247 flights)
  • 9 AM–12 PM85%(100 flights)
  • 3–6 PM82%(11 flights)
On-time trend by month
71%
May

Jun 87% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202594%31
August 202590%31
September 2025100%30
October 202584%31
November 202593%28
December 202587%30
January 2026100%29
February 2026100%26
March 202690%31
April 2026100%30
May 202671%31
Departures on time
91%
Diverted
0.3%
Flights flown
358
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.