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Flight Reliability

UA 4804 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4804 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

67%
Arrive within 15 minutes
26 min
Average arrival delay
1.1%
Cancelled
0 min
Median arrival delay

Based on 351 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(52 flights)
  • Tue58%(48 flights)
  • Wed72%(46 flights)
  • Thu74%(50 flights)
  • Fri63%(49 flights)
  • Sat65%(49 flights)
  • Sun64%(52 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM80%(122 flights)
  • 12–3 PM67%(120 flights)
  • 3–6 PM—(5 flights)
  • 6–9 PM53%(98 flights)
On-time trend by month
97%
May

Jun 60% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%30
July 202553%30
August 202574%31
September 202553%30
October 202550%28
November 202559%17
December 202561%31
January 202668%31
February 202686%28
March 202660%30
April 202679%29
May 202697%31
Departures on time
72%
Diverted
0.3%
Flights flown
346
Months covered
12

Keep nerding

Based on 351 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.