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WanderNerd

Flight Reliability

UA 3596 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3596 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

80%
Arrive within 15 minutes
5 min
Average arrival delay
3.6%
Cancelled
10 min early
Median arrival delay

Based on 331 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(46 flights)
  • Tue79%(47 flights)
  • Wed88%(48 flights)
  • Thu83%(46 flights)
  • Fri71%(48 flights)
  • Sat80%(40 flights)
  • Sun73%(44 flights)
On-time by departure window
  • 6–9 AM100%(31 flights)
  • 9 AM–12 PM84%(56 flights)
  • 12–3 PM71%(156 flights)
  • 3–6 PM86%(76 flights)
On-time trend by month
92%
May

Aug 54% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202554%13
September 202572%29
October 202590%30
November 202556%25
December 202543%28
January 202693%27
February 202692%25
March 202668%34
April 202697%59
May 202692%49
Departures on time
85%
Diverted
0%
Flights flown
319
Months covered
10

Based on 331 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.