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Flight Reliability

UA 5036 · United Airlines

CYS → Denver (CYS–DEN)100% of its flights flew this route. The rest (DEN–WYS) are included in these numbers.

88
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
9 min
Average arrival delay
0.8%
Cancelled
7 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

The 3–6 AM departure wins.

UA 5036 departing between 3–6 AM arrived on time 100% of the time, versus 83% between 6–9 AM.

Friday is doing you no favors.

UA 5036 arrived on time 91% of the time on Sundays and just 75% on Fridays. That gap is worth planning around.

A bit ahead of the United Airlines network.

UA 5036 arrived on time 83% of the time, versus 79% across the United Airlines network.

Slipping a little lately.

UA 5036 arrived on time 82% of the time over the last three months in the data, compared with 87% in the three months before that.

The breakdown

On-time by weekday
  • Mon85%(52 flights)
  • Tue90%(52 flights)
  • Wed75%(51 flights)
  • Thu82%(50 flights)
  • Fri75%(51 flights)
  • Sat85%(52 flights)
  • Sun91%(54 flights)
On-time by departure window
  • 3–6 AM100%(11 flights)
  • 6–9 AM83%(350 flights)
  • 9 AM–12 PM—(1 flights)
On-time trend by month
87%
May

Jun 83% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202575%32
August 202571%31
September 202597%30
October 202574%31
November 202593%30
December 202584%31
January 202687%30
February 202689%27
March 202673%30
April 202687%30
May 202687%30
Departures on time
88%
Diverted
0%
Flights flown
362
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.