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Flight Reliability

AA 4387 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4387 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

78%
Arrive within 15 minutes
12 min
Average arrival delay
6.8%
Cancelled
11 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(52 flights)
  • Tue80%(56 flights)
  • Wed86%(55 flights)
  • Thu81%(52 flights)
  • Fri76%(55 flights)
  • Sat79%(48 flights)
  • Sun58%(55 flights)
On-time by departure window
  • 6–9 AM100%(11 flights)
  • 12–3 PM89%(44 flights)
  • 3–6 PM75%(305 flights)
  • 6–9 PM77%(13 flights)
On-time trend by month
85%
May

Jun 40% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202540%25
July 202555%22
August 202577%30
September 202583%29
October 202576%29
November 202589%27
December 202564%28
January 202683%29
February 202696%25
March 202671%31
April 202690%51
May 202685%47
Departures on time
76%
Diverted
0%
Flights flown
373
Months covered
12

Keep nerding

Based on 400 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.