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Flight Reliability

UA 3588 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3588 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
2 min early
Average arrival delay
1.8%
Cancelled
14 min early
Median arrival delay

Based on 332 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(48 flights)
  • Tue84%(50 flights)
  • Wed88%(49 flights)
  • Thu88%(49 flights)
  • Fri87%(45 flights)
  • Sat84%(37 flights)
  • Sun89%(46 flights)
On-time by departure window
  • 6–9 AM84%(55 flights)
  • 9 AM–12 PM94%(124 flights)
  • 12–3 PM90%(73 flights)
  • 3–6 PM44%(25 flights)
  • 6–9 PM85%(47 flights)
On-time trend by month
85%
May

Jun 93% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%27
July 202593%27
August 202587%31
September 202597%29
October 2025100%31
November 202583%30
December 202583%30
January 202662%21
February 202664%22
March 202690%30
April 202689%26
May 202685%20
Departures on time
89%
Diverted
0.6%
Flights flown
324
Months covered
12

Keep nerding

Based on 332 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.