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Flight Reliability

UA 528 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 528 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

85%
Arrive within 15 minutes
5 min
Average arrival delay
1.6%
Cancelled
9 min early
Median arrival delay

Based on 427 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(61 flights)
  • Tue95%(61 flights)
  • Wed87%(61 flights)
  • Thu86%(64 flights)
  • Fri77%(64 flights)
  • Sat85%(48 flights)
  • Sun83%(59 flights)
On-time by departure window
  • 6–9 AM90%(191 flights)
  • 9 AM–12 PM66%(41 flights)
  • 12–3 PM86%(186 flights)
On-time trend by month
86%
May

Jun 87% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202587%30
August 202596%27
September 202593%27
October 202587%31
November 202585%26
December 202583%29
January 202697%29
February 202688%50
March 202672%58
April 202677%31
May 202686%50
Departures on time
86%
Diverted
0.5%
Flights flown
418
Months covered
12

Keep nerding

Based on 427 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.