Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 5691 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5691 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

68%
Arrive within 15 minutes
22 min
Average arrival delay
6.2%
Cancelled
2 min early
Median arrival delay

Based on 305 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(42 flights)
  • Tue71%(34 flights)
  • Wed76%(42 flights)
  • Thu74%(43 flights)
  • Fri62%(42 flights)
  • Sat58%(43 flights)
  • Sun63%(40 flights)
On-time by departure window
  • 9 AM–12 PM93%(15 flights)
  • 12–3 PM76%(153 flights)
  • 3–6 PM36%(69 flights)
  • 6–9 PM78%(49 flights)
On-time trend by month
86%
May

Jun 81% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%16
August 202577%31
September 202573%30
October 202581%31
November 202550%22
December 202521%24
January 202655%29
February 202671%28
March 202658%26
April 202682%22
May 202686%22
Departures on time
75%
Diverted
0%
Flights flown
286
Months covered
12

Keep nerding

Based on 305 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.