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Flight Reliability

UA 3647 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3647 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

86%
Arrive within 15 minutes
3 min early
Average arrival delay
2.5%
Cancelled
14 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(57 flights)
  • Tue80%(55 flights)
  • Wed88%(59 flights)
  • Thu84%(56 flights)
  • Fri90%(60 flights)
  • Sat86%(49 flights)
  • Sun91%(53 flights)
On-time by departure window
  • 6–9 AM—(3 flights)
  • 9 AM–12 PM91%(265 flights)
  • 12–3 PM83%(70 flights)
  • 3–6 PM70%(47 flights)
  • 6–9 PM—(4 flights)
On-time trend by month
100%
May

Jun 83% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202565%31
August 202590%31
September 202591%22
October 202563%27
November 202593%28
December 202583%30
January 202696%28
February 202696%26
March 202683%52
April 202693%53
May 2026100%31
Departures on time
88%
Diverted
0.3%
Flights flown
389
Months covered
12

Keep nerding

Based on 400 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.