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Flight Reliability

UA 4275 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4275 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
1 min early
Average arrival delay
0.6%
Cancelled
12 min early
Median arrival delay

Based on 332 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon92%(47 flights)
  • Tue91%(43 flights)
  • Wed86%(50 flights)
  • Thu80%(46 flights)
  • Fri81%(47 flights)
  • Sat86%(44 flights)
  • Sun81%(52 flights)
On-time by departure window
  • 6–9 AM87%(119 flights)
  • 9 AM–12 PM96%(25 flights)
  • 12–3 PM83%(133 flights)
  • 3–6 PM81%(31 flights)
  • 6–9 PM81%(21 flights)
On-time trend by month
87%
May

Jun 79% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%29
July 202597%31
August 202581%31
September 202590%30
October 202574%31
November 202586%29
December 202577%26
January 202673%11
February 2026100%20
March 202697%30
April 202677%30
May 202687%31
Departures on time
87%
Diverted
0.3%
Flights flown
329
Months covered
12

Keep nerding

Based on 332 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.