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Flight Reliability

UA 4596 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4596 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

70%
Arrive within 15 minutes
17 min
Average arrival delay
3.1%
Cancelled
5 min early
Median arrival delay

Based on 255 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(39 flights)
  • Tue79%(34 flights)
  • Wed69%(39 flights)
  • Thu68%(38 flights)
  • Fri51%(35 flights)
  • Sat88%(24 flights)
  • Sun58%(38 flights)
On-time by departure window
  • 6–9 AM72%(18 flights)
  • 9 AM–12 PM70%(53 flights)
  • 3–6 PM74%(118 flights)
  • 6–9 PM64%(58 flights)
On-time trend by month
62%
May

Jun 76% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%21
July 202558%26
August 202570%10
September 202585%26
October 202586%21
December 202585%13
January 202661%31
February 202670%20
March 202670%23
April 202665%26
May 202662%26
Departures on time
71%
Diverted
0%
Flights flown
247
Months covered
12

Keep nerding

Based on 255 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.