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Flight Reliability

AA 1399 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 1399 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

80%
Arrive within 15 minutes
5 min
Average arrival delay
1.2%
Cancelled
11 min early
Median arrival delay

Based on 329 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(50 flights)
  • Tue88%(40 flights)
  • Wed95%(38 flights)
  • Thu72%(50 flights)
  • Fri82%(49 flights)
  • Sat87%(46 flights)
  • Sun73%(52 flights)
On-time by departure window
  • 6–9 AM86%(126 flights)
  • 12–3 PM88%(17 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM75%(175 flights)
  • 9 PM–12 AM—(4 flights)
On-time trend by month
84%
May

Jun 69% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%29
July 202577%30
August 202584%31
September 202581%21
October 202550%18
November 202593%29
December 202584%19
January 202669%29
February 202693%28
March 202690%30
April 202680%30
May 202684%31
Departures on time
82%
Diverted
0%
Flights flown
325
Months covered
12

Keep nerding

Based on 329 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.