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Flight Reliability

AA 4557 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4557 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

77%
Arrive within 15 minutes
4 min
Average arrival delay
9.3%
Cancelled
6 min early
Median arrival delay

Based on 353 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(48 flights)
  • Tue70%(50 flights)
  • Wed75%(48 flights)
  • Thu75%(48 flights)
  • Fri89%(47 flights)
  • Sat77%(30 flights)
  • Sun71%(49 flights)
On-time by departure window
  • 6–9 AM85%(72 flights)
  • 9 AM–12 PM80%(95 flights)
  • 12–3 PM78%(36 flights)
  • 3–6 PM61%(31 flights)
  • 6–9 PM77%(56 flights)
  • 9 PM–12 AM60%(30 flights)
On-time trend by month
86%
May

Jun 61% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%18
July 202553%19
August 202590%29
September 202565%48
October 202573%33
November 202597%39
January 202678%23
February 202686%21
March 202671%24
April 202672%29
May 202686%29
Departures on time
82%
Diverted
0%
Flights flown
320
Months covered
12

Keep nerding

Based on 353 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.