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Flight Reliability

UA 4249 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4249 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

79%
Arrive within 15 minutes
6 min
Average arrival delay
4.3%
Cancelled
5 min early
Median arrival delay

Based on 325 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(45 flights)
  • Tue78%(41 flights)
  • Wed80%(39 flights)
  • Thu78%(51 flights)
  • Fri72%(46 flights)
  • Sat85%(46 flights)
  • Sun72%(43 flights)
On-time by departure window
  • 9 AM–12 PM69%(16 flights)
  • 12–3 PM83%(40 flights)
  • 3–6 PM81%(194 flights)
  • 6–9 PM69%(61 flights)
On-time trend by month
77%
May

Jun 55% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%22
July 202563%27
August 202594%18
October 202581%31
November 202589%28
December 202584%31
January 202676%29
February 202674%27
March 202686%29
April 202677%30
May 202677%30
Departures on time
82%
Diverted
0%
Flights flown
311
Months covered
12

Keep nerding

Based on 325 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.