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Flight Reliability

UA 4658 · United Airlines

CPR → Denver (CPR–DEN)99% of its flights flew this route. The rest (CID–ORD, LAX–PHX) are included in these numbers.

86
Pretty Reliable
WanderNerd Reliability Score
88%
Arrive within 15 minutes
3 min early
Average arrival delay
1.1%
Cancelled
16 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Tuesday is the weak spot.

UA 4658 arrived on time 94% of the time on Mondays. On Tuesdays: 83%.

A bit ahead of the CPR–DEN route.

UA 4658 arrived on time 88% of the time, versus 81% across the CPR–DEN route.

Better than the United Airlines network average.

UA 4658 arrived on time 88% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon94%(51 flights)
  • Tue83%(52 flights)
  • Wed88%(51 flights)
  • Thu84%(51 flights)
  • Fri90%(48 flights)
  • Sat87%(52 flights)
  • Sun90%(51 flights)
On-time by departure window
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM88%(354 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
90%
May

Jun 63% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%27
July 202581%31
August 202590%30
September 202597%30
October 202594%31
November 202593%30
December 202587%31
January 202693%30
February 202686%28
March 202690%30
April 202689%28
May 202690%30
Departures on time
85%
Diverted
1.4%
Flights flown
356
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.