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Flight Reliability

UA 1259 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1259 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
3 min early
Average arrival delay
0.6%
Cancelled
9 min early
Median arrival delay

Based on 628 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(94 flights)
  • Tue83%(84 flights)
  • Wed88%(85 flights)
  • Thu85%(94 flights)
  • Fri85%(94 flights)
  • Sat85%(75 flights)
  • Sun79%(98 flights)
On-time by departure window
  • 3–6 AM—(4 flights)
  • 6–9 AM86%(290 flights)
  • 9 AM–12 PM81%(36 flights)
  • 12–3 PM82%(209 flights)
  • 3–6 PM89%(74 flights)
  • 6–9 PM82%(11 flights)
On-time trend by month
80%
May

Jun 82% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%33
July 202584%56
August 202584%31
September 202583%30
October 202588%41
November 202574%77
December 202579%56
January 202690%71
February 202694%62
March 202690%62
April 202686%59
May 202680%46
Departures on time
88%
Diverted
0%
Flights flown
624
Months covered
12

Keep nerding

Based on 628 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.