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Flight Reliability

UA 4426 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4426 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

70%
Arrive within 15 minutes
22 min
Average arrival delay
2.6%
Cancelled
4 min early
Median arrival delay

Based on 349 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(50 flights)
  • Tue68%(47 flights)
  • Wed63%(51 flights)
  • Thu69%(49 flights)
  • Fri73%(51 flights)
  • Sat76%(42 flights)
  • Sun67%(49 flights)
On-time by departure window
  • 6–9 AM81%(53 flights)
  • 9 AM–12 PM78%(27 flights)
  • 12–3 PM74%(118 flights)
  • 3–6 PM61%(140 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
68%
May

Jun 55% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%29
July 202557%21
August 202580%30
September 202580%30
October 202581%31
November 202575%28
December 202557%30
January 202679%29
February 202672%25
March 202660%30
April 202672%25
May 202668%31
Departures on time
72%
Diverted
0.3%
Flights flown
339
Months covered
12

Keep nerding

Based on 349 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.