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Flight Reliability

AA 3731 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3731 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
4 min
Average arrival delay
4.8%
Cancelled
6 min early
Median arrival delay

Based on 438 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(60 flights)
  • Tue79%(56 flights)
  • Wed80%(59 flights)
  • Thu77%(64 flights)
  • Fri83%(64 flights)
  • Sat88%(49 flights)
  • Sun75%(63 flights)
On-time by departure window
  • 6–9 AM93%(56 flights)
  • 9 AM–12 PM98%(47 flights)
  • 12–3 PM87%(46 flights)
  • 3–6 PM81%(86 flights)
  • 6–9 PM70%(147 flights)
  • 9 PM–12 AM58%(33 flights)
On-time trend by month
82%
May

Jul 63% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202563%27
August 202573%48
September 2025100%58
October 202589%35
November 202582%17
December 202567%27
January 202660%30
February 202688%25
March 202687%30
April 202672%53
May 202682%60
Departures on time
81%
Diverted
0.5%
Flights flown
415
Months covered
12

Keep nerding

Based on 438 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.