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Flight Reliability

UA 1279 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1279 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
1 min early
Average arrival delay
1.2%
Cancelled
12 min early
Median arrival delay

Based on 336 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(50 flights)
  • Tue80%(46 flights)
  • Wed85%(46 flights)
  • Thu87%(52 flights)
  • Fri88%(51 flights)
  • Sat82%(39 flights)
  • Sun83%(48 flights)
On-time by departure window
  • 6–9 AM96%(116 flights)
  • 9 AM–12 PM81%(90 flights)
  • 12–3 PM82%(89 flights)
  • 3–6 PM64%(36 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
97%
May

Aug 67% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202567%27
September 202588%51
October 202572%25
November 202567%30
December 202573%45
January 202697%30
February 202697%36
March 202685%27
April 2026100%30
May 202697%31
Departures on time
89%
Diverted
0%
Flights flown
332
Months covered
10

Keep nerding

Based on 336 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.