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Flight Reliability

UA 5779 · United Airlines

Denver → Aspen (DEN–ASE)94% of its flights flew this route. The rest (RAP–ORD) are included in these numbers.

49
Bring Snacks
WanderNerd Reliability Score
71%
Arrive within 15 minutes
31 min
Average arrival delay
3.9%
Cancelled
1 min early
Median arrival delay

Based on 357 historical flights. Data through May 2026.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 76% of the time, against 70% between 6–9 PM.

Friday is doing you no favors.

UA 5779 arrived on time 76% of the time on Wednesdays. On Fridays: 65%.

A bit behind the DEN–ASE route.

UA 5779 arrived on time 71% of the time, versus 75% across the DEN–ASE route.

Lagging the United Airlines network.

UA 5779 arrived on time 71% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon67%(49 flights)
  • Tue72%(50 flights)
  • Wed76%(49 flights)
  • Thu72%(47 flights)
  • Fri65%(46 flights)
  • Sat67%(49 flights)
  • Sun76%(49 flights)
On-time by departure window
  • 12–3 PM76%(21 flights)
  • 6–9 PM70%(318 flights)
On-time trend by month
61%
May

Jun 60% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%30
July 202544%27
August 202539%31
September 202583%29
October 202584%31
November 202596%28
December 202557%30
January 202682%27
February 202685%26
March 202689%27
April 202677%22
May 202661%31
Departures on time
71%
Diverted
1.1%
Flights flown
339
Months covered
12

Same route, other flights

Keep nerding

Based on 357 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.