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Flight Reliability

UA 4056 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4056 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

84%
Arrive within 15 minutes
7 min
Average arrival delay
1.1%
Cancelled
11 min early
Median arrival delay

Based on 175 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(31 flights)
  • Tue81%(21 flights)
  • Wed81%(26 flights)
  • Thu93%(27 flights)
  • Fri89%(27 flights)
  • Sat88%(17 flights)
  • Sun65%(23 flights)
On-time by departure window
  • 6–9 AM93%(14 flights)
  • 9 AM–12 PM93%(15 flights)
  • 3–6 PM81%(108 flights)
  • 6–9 PM86%(35 flights)
On-time trend by month
93%
May

Nov 83% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202583%29
December 202568%19
January 202681%26
February 202686%22
March 202683%18
April 202686%21
May 202693%27
Departures on time
85%
Diverted
0.6%
Flights flown
172
Months covered
9

Keep nerding

Based on 175 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.