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Flight Reliability

UA 1641 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1641 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

62%
Arrive within 15 minutes
25 min
Average arrival delay
1.3%
Cancelled
5 min
Median arrival delay

Based on 540 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon54%(79 flights)
  • Tue73%(80 flights)
  • Wed74%(81 flights)
  • Thu59%(80 flights)
  • Fri58%(77 flights)
  • Sat62%(53 flights)
  • Sun55%(82 flights)
On-time by departure window
  • 9 AM–12 PM70%(56 flights)
  • 12–3 PM66%(114 flights)
  • 3–6 PM64%(59 flights)
  • 6–9 PM64%(257 flights)
  • 9 PM–12 AM30%(46 flights)
On-time trend by month
80%
May

Jun 46% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%35
July 202538%58
August 202562%52
September 202578%50
October 202562%34
November 202556%54
December 202560%48
January 202663%27
February 202677%26
March 202672%58
April 202664%55
May 202680%35
Departures on time
65%
Diverted
0.2%
Flights flown
532
Months covered
12

Keep nerding

Based on 540 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.