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Flight Reliability

UA 4529 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4529 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

74%
Arrive within 15 minutes
18 min
Average arrival delay
1.6%
Cancelled
6 min early
Median arrival delay

Based on 319 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(47 flights)
  • Tue70%(37 flights)
  • Wed65%(37 flights)
  • Thu76%(45 flights)
  • Fri73%(48 flights)
  • Sat83%(47 flights)
  • Sun73%(52 flights)
On-time by departure window
  • 6–9 AM77%(133 flights)
  • 9 AM–12 PM70%(60 flights)
  • 12–3 PM71%(101 flights)
  • 3–6 PM74%(19 flights)
On-time trend by month
80%
May

Jun 83% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%12
July 202577%30
August 202581%31
September 202570%30
October 202571%31
November 202571%28
December 202563%30
January 202671%21
February 202676%21
March 202655%29
April 202695%20
May 202680%30
Departures on time
72%
Diverted
0.3%
Flights flown
313
Months covered
12

Keep nerding

Based on 319 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.