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Flight Reliability

UA 4165 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4165 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
31 min
Average arrival delay
3.3%
Cancelled
2 min
Median arrival delay

Based on 362 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon57%(47 flights)
  • Tue75%(47 flights)
  • Wed71%(52 flights)
  • Thu57%(51 flights)
  • Fri63%(51 flights)
  • Sat70%(50 flights)
  • Sun67%(51 flights)
On-time by departure window
  • 9 AM–12 PM63%(194 flights)
  • 12–3 PM79%(28 flights)
  • 3–6 PM66%(110 flights)
  • 6–9 PM77%(17 flights)
On-time trend by month
72%
May

Jun 76% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%29
July 202557%30
August 202574%31
September 202587%31
October 202558%31
November 202566%29
December 202562%29
January 202654%28
February 202673%26
March 202657%28
April 202650%28
May 202672%29
Departures on time
71%
Diverted
0.3%
Flights flown
349
Months covered
12

Keep nerding

Based on 362 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.