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Flight Reliability

UA 5543 · United Airlines

Jackson → Denver (JAC–DEN)100% of its flights flew this route. The rest (SAT–IAH) are included in these numbers.

88
Pretty Reliable
WanderNerd Reliability Score
90%
Arrive within 15 minutes
9 min early
Average arrival delay
2.2%
Cancelled
19 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

Wednesday is the weak spot.

UA 5543 arrived on time 98% of the time on Saturdays. On Wednesdays: 85%.

Better than the JAC–DEN route average.

UA 5543 arrived on time 90% of the time, versus 77% across the JAC–DEN route.

Better than the United Airlines network average.

UA 5543 arrived on time 90% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon90%(52 flights)
  • Tue90%(50 flights)
  • Wed85%(48 flights)
  • Thu90%(51 flights)
  • Fri90%(51 flights)
  • Sat98%(51 flights)
  • Sun89%(52 flights)
On-time trend by month
94%
May

Jun 93% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%29
July 202581%31
August 202584%31
September 202597%30
October 202587%31
November 2025100%26
December 202581%31
January 202697%31
February 202691%23
March 202687%31
April 202697%30
May 202694%31
Departures on time
92%
Diverted
0.3%
Flights flown
355
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.