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Flight Reliability

UA 4059 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4059 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

87%
Arrive within 15 minutes
3 min early
Average arrival delay
2.9%
Cancelled
11 min early
Median arrival delay

Based on 210 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon62%(26 flights)
  • Tue91%(34 flights)
  • Wed93%(29 flights)
  • Thu87%(30 flights)
  • Fri84%(31 flights)
  • Sat100%(26 flights)
  • Sun93%(27 flights)
On-time by departure window
  • 6–9 AM96%(66 flights)
  • 9 AM–12 PM—(6 flights)
  • 12–3 PM83%(65 flights)
  • 3–6 PM82%(66 flights)
On-time trend by month
93%
May

Nov 96% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202596%26
December 202574%31
January 202666%29
February 202696%28
March 202690%31
April 202694%18
May 202693%30
Departures on time
87%
Diverted
0.5%
Flights flown
203
Months covered
9

Keep nerding

Based on 210 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.