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Flight Reliability

UA 4425 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4425 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

66%
Arrive within 15 minutes
22 min
Average arrival delay
4.5%
Cancelled
0 min
Median arrival delay

Based on 314 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon56%(43 flights)
  • Tue70%(40 flights)
  • Wed70%(46 flights)
  • Thu61%(41 flights)
  • Fri60%(42 flights)
  • Sat77%(43 flights)
  • Sun72%(43 flights)
On-time by departure window
  • 6–9 AM86%(14 flights)
  • 9 AM–12 PM46%(22 flights)
  • 12–3 PM60%(114 flights)
  • 3–6 PM73%(148 flights)
On-time trend by month
67%
May

Jun 63% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%24
July 202548%29
August 202556%25
September 202583%24
November 202565%26
December 202552%31
January 202662%29
February 202671%28
March 202684%25
April 202681%21
May 202667%30
Departures on time
70%
Diverted
0.6%
Flights flown
298
Months covered
12

Keep nerding

Based on 314 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.