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Flight Reliability

UA 3487 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3487 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

85%
Arrive within 15 minutes
2 min
Average arrival delay
4.0%
Cancelled
8 min early
Median arrival delay

Based on 401 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(56 flights)
  • Tue91%(56 flights)
  • Wed98%(57 flights)
  • Thu79%(57 flights)
  • Fri72%(54 flights)
  • Sat88%(50 flights)
  • Sun82%(55 flights)
On-time by departure window
  • 6–9 AM100%(22 flights)
  • 9 AM–12 PM95%(37 flights)
  • 12–3 PM85%(228 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM78%(95 flights)
On-time trend by month
97%
May

Jun 83% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202583%54
August 202581%42
September 202593%30
October 202594%31
November 202585%27
December 202584%31
January 202679%29
February 202679%28
March 202679%24
April 202686%28
May 202697%31
Departures on time
87%
Diverted
0%
Flights flown
385
Months covered
12

Keep nerding

Based on 401 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.