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Flight Reliability

UA 4779 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4779 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

75%
Arrive within 15 minutes
9 min
Average arrival delay
2.1%
Cancelled
6 min early
Median arrival delay

Based on 334 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(48 flights)
  • Tue77%(47 flights)
  • Wed75%(48 flights)
  • Thu76%(45 flights)
  • Fri74%(46 flights)
  • Sat78%(45 flights)
  • Sun68%(47 flights)
On-time by departure window
  • 6–9 AM95%(37 flights)
  • 9 AM–12 PM67%(15 flights)
  • 12–3 PM70%(122 flights)
  • 3–6 PM77%(146 flights)
  • 6–9 PM—(6 flights)
On-time trend by month
47%
May

Jun 87% → May 47% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202571%31
August 202583%30
September 2025100%11
October 202597%31
November 202579%19
December 202562%29
January 202684%31
February 202667%27
March 202684%31
April 202650%26
May 202647%30
Departures on time
76%
Diverted
0.3%
Flights flown
326
Months covered
12

Keep nerding

Based on 334 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.