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Flight Reliability

UA 5500 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5500 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
9 min
Average arrival delay
2.9%
Cancelled
2 min early
Median arrival delay

Based on 308 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(47 flights)
  • Tue74%(34 flights)
  • Wed81%(36 flights)
  • Thu72%(47 flights)
  • Fri82%(45 flights)
  • Sat76%(41 flights)
  • Sun84%(49 flights)
On-time by departure window
  • 6–9 AM81%(129 flights)
  • 9 AM–12 PM63%(19 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM79%(110 flights)
  • 6–9 PM75%(40 flights)
On-time trend by month
72%
May

Jun 67% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202580%30
August 202583%24
September 202588%17
October 202595%20
November 202582%27
December 202572%29
January 202683%30
February 202682%27
March 202660%10
April 202669%26
May 202672%29
Departures on time
85%
Diverted
0%
Flights flown
299
Months covered
12

Keep nerding

Based on 308 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.