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Flight Reliability

UA 5477 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5477 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

59%
Arrive within 15 minutes
39 min
Average arrival delay
3.4%
Cancelled
8 min
Median arrival delay

Based on 356 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon58%(50 flights)
  • Tue67%(48 flights)
  • Wed69%(51 flights)
  • Thu53%(49 flights)
  • Fri51%(49 flights)
  • Sat69%(45 flights)
  • Sun50%(52 flights)
On-time by departure window
  • 3–6 AM79%(19 flights)
  • 6–9 AM55%(11 flights)
  • 9 AM–12 PM77%(26 flights)
  • 3–6 PM56%(246 flights)
  • 6–9 PM60%(42 flights)
On-time trend by month
70%
May

Jun 53% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%30
July 202538%29
August 202564%28
September 202567%30
October 202565%31
November 202565%26
December 202550%30
January 202633%27
February 202667%27
March 202663%30
April 202677%26
May 202670%30
Departures on time
72%
Diverted
0%
Flights flown
344
Months covered
12

Keep nerding

Based on 356 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.