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Flight Reliability

UA 777 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 777 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
18 min
Average arrival delay
0.8%
Cancelled
1 min
Median arrival delay

Based on 489 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(72 flights)
  • Tue77%(70 flights)
  • Wed76%(70 flights)
  • Thu69%(68 flights)
  • Fri74%(69 flights)
  • Sat73%(62 flights)
  • Sun68%(72 flights)
On-time by departure window
  • 6–9 AM86%(22 flights)
  • 12–3 PM83%(109 flights)
  • 3–6 PM65%(159 flights)
  • 6–9 PM69%(193 flights)
On-time trend by month
73%
May

Jun 65% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%77
July 202583%30
August 202564%44
September 202577%30
October 202568%37
November 202563%57
December 202575%32
January 202681%31
February 202684%45
March 202664%39
April 202681%31
May 202673%30
Departures on time
74%
Diverted
0.4%
Flights flown
483
Months covered
12

Keep nerding

Based on 489 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.