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Flight Reliability

UA 4677 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4677 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

86%
Arrive within 15 minutes
4 min
Average arrival delay
1.2%
Cancelled
11 min early
Median arrival delay

Based on 347 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(52 flights)
  • Tue89%(44 flights)
  • Wed89%(45 flights)
  • Thu90%(52 flights)
  • Fri80%(50 flights)
  • Sat75%(47 flights)
  • Sun90%(52 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM93%(189 flights)
  • 9 AM–12 PM80%(10 flights)
  • 12–3 PM71%(61 flights)
  • 3–6 PM82%(81 flights)
On-time trend by month
100%
May

Jun 60% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%30
July 202590%30
August 202565%23
September 202593%29
October 202587%31
November 202573%30
December 202583%30
January 202687%23
February 202692%25
March 202693%30
April 2026100%30
May 2026100%31
Departures on time
87%
Diverted
0.3%
Flights flown
342
Months covered
12

Keep nerding

Based on 347 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.