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Flight Reliability

UA 5040 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5040 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

90%
Arrive within 15 minutes
3 min
Average arrival delay
1.1%
Cancelled
11 min early
Median arrival delay

Based on 375 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(55 flights)
  • Tue94%(48 flights)
  • Wed87%(53 flights)
  • Thu82%(51 flights)
  • Fri87%(54 flights)
  • Sat96%(48 flights)
  • Sun91%(54 flights)
On-time by departure window
  • 3–6 AM90%(171 flights)
  • 9 AM–12 PM88%(118 flights)
  • 12–3 PM91%(74 flights)
On-time trend by month
84%
May

Jun 83% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202593%29
August 2025100%30
September 202593%30
October 202583%30
November 2025100%29
December 202588%25
January 202683%30
February 202685%26
March 202686%29
April 202697%30
May 202684%45
Departures on time
91%
Diverted
2.1%
Flights flown
363
Months covered
12

Keep nerding

Based on 375 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.