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Flight Reliability

UA 425 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 425 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

84%
Arrive within 15 minutes
3 min
Average arrival delay
1.5%
Cancelled
9 min early
Median arrival delay

Based on 477 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(70 flights)
  • Tue86%(70 flights)
  • Wed93%(70 flights)
  • Thu88%(68 flights)
  • Fri77%(68 flights)
  • Sat86%(55 flights)
  • Sun79%(68 flights)
On-time by departure window
  • 6–9 AM95%(150 flights)
  • 9 AM–12 PM90%(103 flights)
  • 12–3 PM68%(76 flights)
  • 3–6 PM76%(120 flights)
  • 6–9 PM75%(20 flights)
On-time trend by month
77%
May

Jun 80% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%35
July 202572%61
August 202597%31
September 2025100%30
October 202586%36
November 202570%54
December 202563%32
January 202688%25
February 202693%44
March 202697%36
April 202695%55
May 202677%30
Departures on time
84%
Diverted
0.2%
Flights flown
469
Months covered
12

Keep nerding

Based on 477 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.