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Flight Reliability

AA 4551 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4551 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

89%
Arrive within 15 minutes
5 min early
Average arrival delay
4.4%
Cancelled
11 min early
Median arrival delay

Based on 344 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(46 flights)
  • Tue94%(46 flights)
  • Wed94%(47 flights)
  • Thu84%(45 flights)
  • Fri83%(47 flights)
  • Sat96%(48 flights)
  • Sun88%(49 flights)
On-time by departure window
  • 3–6 AM—(5 flights)
  • 6–9 AM90%(313 flights)
  • 12–3 PM—(1 flights)
  • 6–9 PM—(9 flights)
On-time trend by month
100%
May

Jun 93% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202593%29
August 202597%31
September 202593%30
October 202594%31
November 202576%21
December 202578%18
January 202679%29
February 202689%26
March 202677%26
April 202689%26
May 2026100%31
Departures on time
92%
Diverted
0.3%
Flights flown
328
Months covered
12

Keep nerding

Based on 344 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.