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Flight Reliability

UA 4781 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4781 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

82%
Arrive within 15 minutes
5 min
Average arrival delay
1.6%
Cancelled
10 min early
Median arrival delay

Based on 322 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(46 flights)
  • Tue87%(47 flights)
  • Wed89%(46 flights)
  • Thu93%(42 flights)
  • Fri71%(44 flights)
  • Sat72%(43 flights)
  • Sun77%(47 flights)
On-time by departure window
  • 3–6 AM97%(110 flights)
  • 6–9 AM39%(31 flights)
  • 9 AM–12 PM76%(110 flights)
  • 12–3 PM100%(22 flights)
  • 3–6 PM—(9 flights)
  • 6–9 PM82%(33 flights)
On-time trend by month
86%
May

Jun 97% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202597%31
August 2025100%31
September 202592%25
November 202581%26
December 202543%28
January 202666%29
February 202675%28
March 202661%28
April 2026100%22
May 202686%29
Departures on time
86%
Diverted
0.6%
Flights flown
315
Months covered
12

Keep nerding

Based on 322 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.