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Flight Reliability

UA 2440 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2440 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

86%
Arrive within 15 minutes
0 min
Average arrival delay
0.4%
Cancelled
7 min early
Median arrival delay

Based on 500 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(73 flights)
  • Tue83%(72 flights)
  • Wed90%(72 flights)
  • Thu100%(68 flights)
  • Fri79%(70 flights)
  • Sat84%(70 flights)
  • Sun86%(73 flights)
On-time by departure window
  • 3–6 AM80%(25 flights)
  • 6–9 AM86%(160 flights)
  • 9 AM–12 PM93%(57 flights)
  • 12–3 PM87%(235 flights)
  • 6–9 PM—(1 flights)
  • 9 PM–12 AM70%(20 flights)
On-time trend by month
74%
May

Jun 89% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%55
July 202586%29
August 202587%62
September 202591%54
October 202570%37
November 202578%58
December 202591%32
January 202697%30
February 202691%45
March 202691%35
April 202690%30
May 202674%31
Departures on time
89%
Diverted
0%
Flights flown
498
Months covered
12

Keep nerding

Based on 500 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.