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Flight Reliability

UA 5726 · United Airlines

Chicago → Knoxville (ORD–TYS)85% of its flights flew this route. The rest (DSM–ORD, SFO–MSP) are included in these numbers.

83
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
5 min
Average arrival delay
1.1%
Cancelled
6 min early
Median arrival delay

Based on 284 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

UA 5726 arrived on time 89% of the time on Tuesdays. On Fridays: 76%.

Better than the ORD–TYS route average.

UA 5726 arrived on time 82% of the time, versus 67% across the ORD–TYS route.

Ticking up lately.

UA 5726 arrived on time 75% of the time over the last three months in the data, compared with 71% in the three months before that.

The breakdown

On-time by weekday
  • Mon79%(43 flights)
  • Tue89%(37 flights)
  • Wed87%(38 flights)
  • Thu81%(42 flights)
  • Fri76%(42 flights)
  • Sat77%(35 flights)
  • Sun83%(42 flights)
On-time by departure window
  • 6–9 AM82%(275 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM—(2 flights)
On-time trend by month
95%
May

Jun 93% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202581%31
August 202587%31
September 2025100%18
October 202594%31
November 202573%26
December 202567%15
February 202674%19
March 202652%25
April 202678%27
May 202695%21
Departures on time
86%
Diverted
0.7%
Flights flown
279
Months covered
12

Same route, other flights

Keep nerding

Based on 284 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.