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Flight Reliability

AA 4256 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4256 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

78%
Arrive within 15 minutes
3 min
Average arrival delay
0.5%
Cancelled
9 min early
Median arrival delay

Based on 550 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(81 flights)
  • Tue78%(68 flights)
  • Wed85%(71 flights)
  • Thu84%(85 flights)
  • Fri80%(83 flights)
  • Sat75%(77 flights)
  • Sun76%(82 flights)
On-time by departure window
  • 6–9 AM81%(225 flights)
  • 9 AM–12 PM82%(217 flights)
  • 12–3 PM75%(61 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM49%(43 flights)
On-time trend by month
87%
May

Jun 83% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%52
July 202576%62
August 202586%56
September 202588%58
October 202573%62
November 202573%44
December 202571%31
January 202644%25
February 202676%45
March 202664%14
April 202689%36
May 202687%62
Departures on time
80%
Diverted
0%
Flights flown
547
Months covered
12

Keep nerding

Based on 550 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.