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Flight Reliability

UA 1235 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1235 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

88%
Arrive within 15 minutes
1 min early
Average arrival delay
0.5%
Cancelled
8 min early
Median arrival delay

Based on 390 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(55 flights)
  • Tue84%(55 flights)
  • Wed91%(55 flights)
  • Thu84%(55 flights)
  • Fri87%(55 flights)
  • Sat87%(55 flights)
  • Sun90%(57 flights)
On-time by departure window
  • 6–9 AM90%(68 flights)
  • 9 AM–12 PM87%(319 flights)
On-time trend by month
97%
May

Jun 84% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%55
July 202587%31
August 202587%31
September 202593%30
October 202587%31
November 202593%30
December 202590%31
January 202668%31
February 202685%27
March 202683%30
April 2026100%30
May 202697%30
Departures on time
89%
Diverted
0.3%
Flights flown
387
Months covered
12

Keep nerding

Based on 390 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.