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Flight Reliability

UA 1140 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1140 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

79%
Arrive within 15 minutes
7 min
Average arrival delay
0.4%
Cancelled
4 min early
Median arrival delay

Based on 561 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(82 flights)
  • Tue83%(81 flights)
  • Wed82%(81 flights)
  • Thu78%(80 flights)
  • Fri71%(80 flights)
  • Sat83%(69 flights)
  • Sun74%(83 flights)
On-time by departure window
  • 6–9 AM96%(131 flights)
  • 9 AM–12 PM98%(40 flights)
  • 12–3 PM86%(35 flights)
  • 3–6 PM65%(250 flights)
  • 6–9 PM79%(100 flights)
On-time trend by month
83%
May

Jun 78% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%83
July 202562%61
August 202582%44
September 202574%54
October 202573%37
November 202587%60
December 202583%60
January 202687%30
February 202678%27
March 202673%30
April 202690%30
May 202683%40
Departures on time
83%
Diverted
0.5%
Flights flown
556
Months covered
12

Keep nerding

Based on 561 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.