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Flight Reliability

AA 3643 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3643 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

85%
Arrive within 15 minutes
3 min
Average arrival delay
0.6%
Cancelled
7 min early
Median arrival delay

Based on 479 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon89%(72 flights)
  • Tue93%(71 flights)
  • Wed83%(64 flights)
  • Thu87%(69 flights)
  • Fri74%(65 flights)
  • Sat83%(64 flights)
  • Sun87%(70 flights)
On-time by departure window
  • 6–9 AM88%(195 flights)
  • 9 AM–12 PM90%(58 flights)
  • 12–3 PM84%(112 flights)
  • 3–6 PM80%(54 flights)
  • 6–9 PM79%(56 flights)
On-time trend by month
93%
May

Jun 88% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%33
July 202597%30
August 202586%55
September 202588%32
October 202591%57
November 202581%26
December 202590%19
January 202672%18
February 202679%43
March 202679%61
April 202682%60
May 202693%41
Departures on time
87%
Diverted
0.2%
Flights flown
475
Months covered
12

Keep nerding

Based on 479 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.