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Flight Reliability

UA 1787 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1787 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

75%
Arrive within 15 minutes
11 min
Average arrival delay
0.2%
Cancelled
2 min early
Median arrival delay

Based on 410 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(58 flights)
  • Tue78%(60 flights)
  • Wed76%(55 flights)
  • Thu74%(61 flights)
  • Fri74%(62 flights)
  • Sat77%(52 flights)
  • Sun71%(59 flights)
On-time by departure window
  • 3–6 AM—(4 flights)
  • 12–3 PM84%(19 flights)
  • 3–6 PM80%(218 flights)
  • 6–9 PM73%(110 flights)
  • 9 PM–12 AM54%(56 flights)
On-time trend by month
77%
May

Jun 35% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202535%29
July 202567%30
August 202545%31
September 202566%35
October 202583%29
November 202580%20
December 202584%31
January 202685%27
February 202689%27
March 202687%55
April 202690%31
May 202677%62
Departures on time
77%
Diverted
0.5%
Flights flown
407
Months covered
12

Keep nerding

Based on 410 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.