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Flight Reliability

UA 1256 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1256 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

91%
Arrive within 15 minutes
4 min early
Average arrival delay
1.7%
Cancelled
11 min early
Median arrival delay

Based on 419 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(58 flights)
  • Tue88%(58 flights)
  • Wed92%(59 flights)
  • Thu87%(60 flights)
  • Fri93%(60 flights)
  • Sat95%(58 flights)
  • Sun95%(59 flights)
On-time by departure window
  • 6–9 AM91%(353 flights)
  • 9 AM–12 PM—(3 flights)
  • 12–3 PM91%(55 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
94%
May

Jun 89% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%35
July 202582%61
August 202586%49
September 202597%30
October 202597%30
November 202597%30
December 202594%31
January 202696%28
February 202692%26
March 202684%31
April 202697%30
May 202694%31
Departures on time
91%
Diverted
0%
Flights flown
412
Months covered
12

Keep nerding

Based on 419 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.