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Flight Reliability

AA 4040 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4040 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

74%
Arrive within 15 minutes
9 min
Average arrival delay
2.6%
Cancelled
8 min early
Median arrival delay

Based on 501 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(72 flights)
  • Tue83%(70 flights)
  • Wed78%(71 flights)
  • Thu79%(65 flights)
  • Fri61%(70 flights)
  • Sat78%(63 flights)
  • Sun66%(74 flights)
On-time by departure window
  • 9 AM–12 PM83%(115 flights)
  • 12–3 PM77%(209 flights)
  • 3–6 PM59%(120 flights)
  • 6–9 PM73%(41 flights)
On-time trend by month
87%
May

Jun 57% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%53
July 202533%51
August 202582%61
October 202582%22
November 202590%52
December 202577%35
January 202666%35
February 202689%28
March 202679%29
April 202674%54
May 202687%61
Departures on time
78%
Diverted
0.6%
Flights flown
485
Months covered
12

Keep nerding

Based on 501 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.