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Flight Reliability

UA 3579 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3579 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

78%
Arrive within 15 minutes
7 min
Average arrival delay
1.7%
Cancelled
10 min early
Median arrival delay

Based on 355 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(51 flights)
  • Tue77%(51 flights)
  • Wed88%(48 flights)
  • Thu77%(52 flights)
  • Fri75%(51 flights)
  • Sat82%(45 flights)
  • Sun78%(50 flights)
On-time by departure window
  • 6–9 AM94%(31 flights)
  • 9 AM–12 PM80%(66 flights)
  • 12–3 PM79%(140 flights)
  • 3–6 PM65%(63 flights)
  • 6–9 PM80%(30 flights)
  • 9 PM–12 AM83%(18 flights)
On-time trend by month
84%
May

Jun 64% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%22
July 202555%29
August 202574%31
September 202586%29
October 202574%31
November 202579%28
December 202582%28
January 202690%30
February 202675%28
March 202681%31
April 202693%30
May 202684%31
Departures on time
84%
Diverted
0.3%
Flights flown
348
Months covered
12

Keep nerding

Based on 355 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.