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Flight Reliability

UA 2423 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2423 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

74%
Arrive within 15 minutes
12 min
Average arrival delay
0.3%
Cancelled
4 min early
Median arrival delay

Based on 383 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon62%(55 flights)
  • Tue85%(52 flights)
  • Wed80%(54 flights)
  • Thu75%(55 flights)
  • Fri76%(54 flights)
  • Sat80%(55 flights)
  • Sun64%(55 flights)
On-time by departure window
  • 6–9 AM86%(79 flights)
  • 12–3 PM76%(21 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM70%(257 flights)
  • 9 PM–12 AM80%(20 flights)
On-time trend by month
97%
May

Jun 78% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%27
July 202567%30
August 202553%30
September 202570%30
October 202590%31
November 202577%30
December 202552%31
January 202671%31
February 202669%45
March 202680%35
April 202690%29
May 202697%31
Departures on time
69%
Diverted
0.5%
Flights flown
380
Months covered
12

Keep nerding

Based on 383 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.