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Flight Reliability

UA 5023 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5023 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

76%
Arrive within 15 minutes
25 min
Average arrival delay
1.4%
Cancelled
6 min early
Median arrival delay

Based on 361 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(60 flights)
  • Tue90%(29 flights)
  • Wed83%(59 flights)
  • Thu72%(58 flights)
  • Fri61%(57 flights)
  • Sat77%(30 flights)
  • Sun82%(60 flights)
On-time by departure window
  • 6–9 AM—(3 flights)
  • 9 AM–12 PM84%(45 flights)
  • 12–3 PM—(6 flights)
  • 3–6 PM74%(178 flights)
  • 6–9 PM74%(121 flights)
On-time trend by month
74%
May

Jun 63% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202555%20
August 202557%21
September 202586%21
October 202580%25
November 202593%30
December 202574%31
January 202661%23
February 202676%25
March 202688%32
April 202683%52
May 202674%43
Departures on time
78%
Diverted
0.8%
Flights flown
353
Months covered
12

Keep nerding

Based on 361 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.