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Flight Reliability

UA 573 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 573 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

80%
Arrive within 15 minutes
1 min
Average arrival delay
0.3%
Cancelled
8 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(59 flights)
  • Tue86%(55 flights)
  • Wed79%(56 flights)
  • Thu85%(60 flights)
  • Fri79%(53 flights)
  • Sat87%(53 flights)
  • Sun71%(61 flights)
On-time by departure window
  • 6–9 AM96%(23 flights)
  • 9 AM–12 PM92%(108 flights)
  • 12–3 PM77%(119 flights)
  • 3–6 PM86%(35 flights)
  • 6–9 PM69%(87 flights)
  • 9 PM–12 AM64%(25 flights)
On-time trend by month
77%
May

Jun 69% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%49
July 202565%31
August 202576%29
September 202583%36
October 202585%52
November 202563%19
December 202597%31
January 202697%31
February 202686%28
March 202687%30
April 202673%30
May 202677%31
Departures on time
83%
Diverted
0.5%
Flights flown
397
Months covered
12

Keep nerding

Based on 400 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.