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Flight Reliability

AA 5821 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 5821 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

91%
Arrive within 15 minutes
7 min early
Average arrival delay
2.1%
Cancelled
16 min early
Median arrival delay

Based on 487 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(71 flights)
  • Tue95%(63 flights)
  • Wed94%(70 flights)
  • Thu88%(69 flights)
  • Fri94%(69 flights)
  • Sat89%(64 flights)
  • Sun90%(69 flights)
On-time by departure window
  • 3–6 AM96%(83 flights)
  • 6–9 AM97%(38 flights)
  • 9 AM–12 PM92%(143 flights)
  • 12–3 PM88%(91 flights)
  • 3–6 PM78%(45 flights)
  • 6–9 PM90%(72 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
98%
May

Jun 100% → May 98% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%29
July 2025100%30
August 202596%27
September 202591%56
October 202588%56
November 202596%27
December 202598%53
January 202676%33
February 202675%12
March 202678%41
April 202688%60
May 202698%51
Departures on time
89%
Diverted
0.4%
Flights flown
475
Months covered
12

Keep nerding

Based on 487 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.