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Flight Reliability

UA 578 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 578 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

83%
Arrive within 15 minutes
9 min
Average arrival delay
1.2%
Cancelled
5 min early
Median arrival delay

Based on 407 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon92%(59 flights)
  • Tue76%(53 flights)
  • Wed78%(55 flights)
  • Thu82%(61 flights)
  • Fri85%(60 flights)
  • Sat81%(52 flights)
  • Sun86%(59 flights)
On-time by departure window
  • 6–9 AM87%(165 flights)
  • 9 AM–12 PM69%(13 flights)
  • 12–3 PM81%(221 flights)
On-time trend by month
75%
May

Jun 76% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%55
July 202584%31
August 202596%24
September 2025100%19
October 202590%31
November 202579%29
December 202584%45
January 202688%34
February 202679%38
March 202680%35
April 202677%30
May 202675%28
Departures on time
87%
Diverted
0.7%
Flights flown
399
Months covered
12

Keep nerding

Based on 407 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.