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Flight Reliability

UA 584 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 584 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

88%
Arrive within 15 minutes
3 min early
Average arrival delay
1.5%
Cancelled
12 min early
Median arrival delay

Based on 480 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(70 flights)
  • Tue94%(68 flights)
  • Wed90%(70 flights)
  • Thu90%(67 flights)
  • Fri84%(68 flights)
  • Sat86%(65 flights)
  • Sun86%(64 flights)
On-time by departure window
  • 3–6 AM96%(23 flights)
  • 6–9 AM93%(251 flights)
  • 9 AM–12 PM82%(108 flights)
  • 12–3 PM78%(90 flights)
On-time trend by month
93%
May

Jun 75% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%57
July 202593%27
August 202597%30
September 2025100%30
October 202590%31
November 202590%30
December 202578%45
January 202690%29
February 202689%44
March 202692%60
April 202683%59
May 202693%30
Departures on time
88%
Diverted
0.2%
Flights flown
472
Months covered
12

Keep nerding

Based on 480 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.