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Flight Reliability

UA 4675 · United Airlines

Colorado Springs → Denver (COS–DEN)91% of its flights flew this route. The rest (DAY–ORD, SFO–MTJ) are included in these numbers.

79
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
3 min
Average arrival delay
2.3%
Cancelled
8 min early
Median arrival delay

Based on 350 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

UA 4675 departing between 6–9 AM arrived on time 96% of the time, versus 79% between 9 AM–12 PM.

Thursdays have been rough.

UA 4675 arrived on time 90% of the time on Saturdays and just 73% on Thursdays. That gap is worth planning around.

Slipping a little lately.

UA 4675 arrived on time 77% of the time over the last three months in the data, compared with 81% in the three months before that.

The breakdown

On-time by weekday
  • Mon75%(48 flights)
  • Tue85%(48 flights)
  • Wed77%(48 flights)
  • Thu73%(48 flights)
  • Fri79%(47 flights)
  • Sat90%(51 flights)
  • Sun83%(52 flights)
On-time by departure window
  • 6–9 AM96%(25 flights)
  • 9 AM–12 PM79%(310 flights)
  • 12–3 PM—(6 flights)
  • 3–6 PM—(1 flights)
On-time trend by month
87%
May

Jun 97% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202568%31
August 202577%31
September 202590%30
October 202571%31
November 202591%22
December 202574%31
January 202687%31
February 202681%16
March 202675%28
April 202670%30
May 202687%31
Departures on time
81%
Diverted
0%
Flights flown
342
Months covered
12

Same route, other flights

Keep nerding

Based on 350 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.