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Flight Reliability

UA 691 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 691 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

76%
Arrive within 15 minutes
13 min
Average arrival delay
0.2%
Cancelled
2 min early
Median arrival delay

Based on 421 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(66 flights)
  • Tue78%(55 flights)
  • Wed75%(61 flights)
  • Thu75%(60 flights)
  • Fri72%(64 flights)
  • Sat72%(54 flights)
  • Sun79%(58 flights)
On-time by departure window
  • 6–9 AM87%(52 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM72%(188 flights)
  • 3–6 PM75%(149 flights)
  • 6–9 PM89%(28 flights)
On-time trend by month
65%
May

Jun 76% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%50
July 202571%38
August 202582%27
September 202580%30
October 202570%37
November 202591%57
December 202588%32
January 202658%31
February 202668%28
March 202690%29
April 202668%28
May 202665%31
Departures on time
78%
Diverted
0.5%
Flights flown
418
Months covered
12

Keep nerding

Based on 421 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.