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Flight Reliability

UA 4691 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4691 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

77%
Arrive within 15 minutes
12 min
Average arrival delay
2.3%
Cancelled
3 min early
Median arrival delay

Based on 343 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(46 flights)
  • Tue69%(48 flights)
  • Wed85%(48 flights)
  • Thu84%(45 flights)
  • Fri71%(51 flights)
  • Sat80%(46 flights)
  • Sun77%(48 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM71%(52 flights)
  • 9 AM–12 PM87%(109 flights)
  • 12–3 PM72%(75 flights)
  • 3–6 PM69%(45 flights)
  • 6–9 PM74%(50 flights)
On-time trend by month
70%
May

Jun 35% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202535%17
July 202568%31
August 202584%31
September 202589%27
October 202572%25
November 202570%30
December 202586%29
January 202693%29
February 202679%28
March 202674%31
April 202685%27
May 202670%27
Departures on time
82%
Diverted
0.9%
Flights flown
332
Months covered
12

Keep nerding

Based on 343 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.