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Flight Reliability

UA 1283 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1283 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

67%
Arrive within 15 minutes
27 min
Average arrival delay
2.9%
Cancelled
5 min early
Median arrival delay

Based on 409 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(53 flights)
  • Tue71%(58 flights)
  • Wed70%(60 flights)
  • Thu62%(52 flights)
  • Fri62%(53 flights)
  • Sat67%(64 flights)
  • Sun56%(55 flights)
On-time by departure window
  • 3–6 AM92%(24 flights)
  • 9 AM–12 PM88%(17 flights)
  • 12–3 PM71%(241 flights)
  • 3–6 PM40%(25 flights)
  • 6–9 PM52%(88 flights)
On-time trend by month
67%
May

Jun 43% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202543%28
July 202552%29
August 202545%31
September 202561%28
October 202557%35
November 202563%56
December 202574%31
January 202688%17
February 202675%20
March 202683%60
April 202690%30
May 202667%30
Departures on time
64%
Diverted
0.5%
Flights flown
395
Months covered
12

Keep nerding

Based on 409 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.