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Flight Reliability

UA 4586 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4586 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

72%
Arrive within 15 minutes
17 min
Average arrival delay
3.4%
Cancelled
5 min early
Median arrival delay

Based on 296 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(37 flights)
  • Tue71%(38 flights)
  • Wed64%(44 flights)
  • Thu75%(40 flights)
  • Fri77%(43 flights)
  • Sat76%(41 flights)
  • Sun73%(41 flights)
On-time by departure window
  • 6–9 AM87%(130 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM67%(88 flights)
  • 3–6 PM47%(17 flights)
  • 6–9 PM46%(48 flights)
On-time trend by month
46%
May

Jul 97% → May 46% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202597%30
August 202587%31
September 202587%30
October 202558%31
November 202569%26
December 202539%28
February 202660%15
March 202681%26
April 202681%26
May 202646%24
Departures on time
77%
Diverted
0.7%
Flights flown
284
Months covered
12

Keep nerding

Based on 296 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.