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Flight Reliability

AA 1645 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 1645 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

64%
Arrive within 15 minutes
22 min
Average arrival delay
2.4%
Cancelled
2 min
Median arrival delay

Based on 377 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon51%(53 flights)
  • Tue74%(53 flights)
  • Wed74%(53 flights)
  • Thu65%(57 flights)
  • Fri56%(52 flights)
  • Sat71%(48 flights)
  • Sun56%(52 flights)
On-time by departure window
  • 6–9 AM—(4 flights)
  • 9 AM–12 PM82%(68 flights)
  • 12–3 PM—(3 flights)
  • 3–6 PM62%(125 flights)
  • 6–9 PM69%(75 flights)
  • 9 PM–12 AM46%(93 flights)
On-time trend by month
55%
May

Jun 79% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%29
July 202584%31
August 202552%31
October 202550%44
November 202569%29
December 202552%29
January 202665%26
February 202671%45
March 202666%38
April 202652%27
May 202655%31
Departures on time
63%
Diverted
0%
Flights flown
368
Months covered
12

Keep nerding

Based on 377 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.