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Flight Reliability

UA 4827 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4827 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

81%
Arrive within 15 minutes
5 min
Average arrival delay
1.3%
Cancelled
14 min early
Median arrival delay

Based on 235 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(37 flights)
  • Tue79%(24 flights)
  • Wed83%(29 flights)
  • Thu84%(38 flights)
  • Fri77%(39 flights)
  • Sat79%(33 flights)
  • Sun84%(32 flights)
On-time by departure window
  • 9 AM–12 PM—(5 flights)
  • 12–3 PM81%(227 flights)
On-time trend by month
86%
May

Jul 65% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202565%31
August 202582%27
September 202589%27
October 202581%31
November 202585%26
December 202587%15
March 202678%23
April 2026100%17
May 202686%22
Departures on time
81%
Diverted
0%
Flights flown
232
Months covered
11

Keep nerding

Based on 235 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.