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Flight Reliability

UA 4786 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4786 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
16 min
Average arrival delay
0.9%
Cancelled
3 min early
Median arrival delay

Based on 352 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(52 flights)
  • Tue73%(51 flights)
  • Wed71%(51 flights)
  • Thu71%(51 flights)
  • Fri69%(51 flights)
  • Sat75%(44 flights)
  • Sun67%(49 flights)
On-time by departure window
  • 6–9 AM87%(31 flights)
  • 9 AM–12 PM—(5 flights)
  • 12–3 PM74%(19 flights)
  • 3–6 PM76%(216 flights)
  • 6–9 PM54%(78 flights)
On-time trend by month
48%
May

Jun 53% → May 48% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%30
July 202553%30
August 202567%30
September 202583%30
October 202574%31
November 202572%29
December 202570%27
January 202693%29
February 202668%28
March 202694%31
April 202682%27
May 202648%27
Departures on time
71%
Diverted
0%
Flights flown
349
Months covered
12

Keep nerding

Based on 352 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.