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Flight Reliability

UA 5081 · United Airlines

Denver → JMS (DEN–JMS)83% of its flights flew this route. The rest (JMS–DEN, LAX–SGU) are included in these numbers.

80
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
7 min
Average arrival delay
1.2%
Cancelled
9 min early
Median arrival delay

Based on 404 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

UA 5081 departing between 12–3 PM arrived on time 82% of the time, versus 71% between 6–9 PM.

Friday is doing you no favors.

UA 5081 arrived on time 89% of the time on Wednesdays and just 72% on Fridays. That gap is worth planning around.

A bit behind the DEN–JMS route.

UA 5081 arrived on time 81% of the time, versus 86% across the DEN–JMS route.

Trending in the right direction.

UA 5081 arrived on time 84% of the time over the last three months in the data, compared with 74% in the three months before that.

The breakdown

On-time by weekday
  • Mon80%(55 flights)
  • Tue80%(56 flights)
  • Wed89%(55 flights)
  • Thu86%(56 flights)
  • Fri72%(57 flights)
  • Sat74%(58 flights)
  • Sun83%(58 flights)
On-time by departure window
  • 12–3 PM82%(354 flights)
  • 6–9 PM71%(41 flights)
On-time trend by month
81%
May

Jun 77% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202581%31
August 202570%30
September 202583%36
October 202582%55
November 202597%29
December 202568%28
January 202686%29
February 202667%27
March 202690%30
April 202682%28
May 202681%42
Departures on time
81%
Diverted
1.0%
Flights flown
395
Months covered
12

Same route, other flights

Keep nerding

Based on 404 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.