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Flight Reliability

UA 1691 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1691 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

75%
Arrive within 15 minutes
15 min
Average arrival delay
0.2%
Cancelled
1 min early
Median arrival delay

Based on 472 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(67 flights)
  • Tue77%(66 flights)
  • Wed69%(65 flights)
  • Thu79%(68 flights)
  • Fri73%(69 flights)
  • Sat79%(65 flights)
  • Sun71%(69 flights)
On-time by departure window
  • 6–9 AM85%(75 flights)
  • 12–3 PM88%(90 flights)
  • 3–6 PM57%(143 flights)
  • 6–9 PM79%(145 flights)
  • 9 PM–12 AM81%(16 flights)
On-time trend by month
87%
May

Jun 63% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%35
July 202545%31
August 202571%61
September 202572%60
October 202579%56
November 202590%30
December 202572%43
January 202680%35
February 202689%28
March 202679%29
April 202687%30
May 202687%31
Departures on time
81%
Diverted
0.4%
Flights flown
469
Months covered
12

Keep nerding

Based on 472 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.