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Flight Reliability

UA 4180 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 4180 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

61%
Arrive within 15 minutes
35 min
Average arrival delay
10.1%
Cancelled
3 min
Median arrival delay

Based on 355 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon62%(45 flights)
  • Tue63%(48 flights)
  • Wed58%(43 flights)
  • Thu48%(44 flights)
  • Fri56%(48 flights)
  • Sat77%(47 flights)
  • Sun61%(44 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM—(7 flights)
  • 12–3 PM85%(27 flights)
  • 3–6 PM75%(36 flights)
  • 6–9 PM56%(248 flights)
On-time trend by month
63%
May

Jun 81% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%26
July 202535%23
August 202561%28
September 202572%29
October 202557%30
November 202548%23
December 202544%23
January 202668%25
February 202671%24
March 202666%29
April 202659%29
May 202663%30
Departures on time
61%
Diverted
0%
Flights flown
319
Months covered
12

Keep nerding

Based on 355 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.