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Flight Reliability

UA 3584 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3584 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

84%
Arrive within 15 minutes
1 min
Average arrival delay
1.2%
Cancelled
9 min early
Median arrival delay

Based on 344 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(51 flights)
  • Tue91%(42 flights)
  • Wed83%(42 flights)
  • Thu87%(52 flights)
  • Fri85%(52 flights)
  • Sat80%(49 flights)
  • Sun71%(52 flights)
On-time by departure window
  • 6–9 AM78%(59 flights)
  • 9 AM–12 PM89%(106 flights)
  • 12–3 PM91%(100 flights)
  • 3–6 PM70%(53 flights)
  • 6–9 PM73%(22 flights)
On-time trend by month
97%
May

Jun 60% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%30
July 202584%31
August 202583%29
September 202597%30
October 202584%31
November 202587%30
December 202579%29
January 202671%21
February 202678%23
March 202680%25
April 202697%30
May 202697%31
Departures on time
87%
Diverted
0%
Flights flown
340
Months covered
12

Keep nerding

Based on 344 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.