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Flight Reliability

UA 5778 · United Airlines

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

45
Bring Snacks
WanderNerd Reliability Score
71%
Arrive within 15 minutes
18 min
Average arrival delay
7.4%
Cancelled
0 min
Median arrival delay

Based on 353 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

UA 5778 departing between 3–6 PM arrived on time 77% of the time, versus 67% between 6–9 PM.

Friday is doing you no favors.

UA 5778 arrived on time 78% of the time on Sundays and just 61% on Fridays. That gap is worth planning around.

A bit behind the ASE–DEN route.

UA 5778 arrived on time 71% of the time, versus 74% across the ASE–DEN route.

Lagging the United Airlines network.

UA 5778 arrived on time 71% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon69%(48 flights)
  • Tue75%(48 flights)
  • Wed75%(48 flights)
  • Thu68%(47 flights)
  • Fri61%(44 flights)
  • Sat70%(46 flights)
  • Sun78%(46 flights)
On-time by departure window
  • 3–6 PM77%(132 flights)
  • 6–9 PM67%(195 flights)
On-time trend by month
57%
May

Jun 41% → May 57% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202541%27
July 202552%21
August 202572%29
September 202570%30
October 202561%31
November 202575%28
December 202586%28
January 202683%29
February 202679%24
March 202685%27
April 202691%23
May 202657%30
Departures on time
75%
Diverted
0%
Flights flown
327
Months covered
12

Same route, other flights

Keep nerding

Based on 353 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.