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Flight Reliability

AA 3877 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3877 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

86%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
6 min early
Median arrival delay

Based on 131 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(19 flights)
  • Tue89%(18 flights)
  • Wed84%(19 flights)
  • Thu90%(20 flights)
  • Fri90%(20 flights)
  • Sat87%(15 flights)
  • Sun84%(19 flights)
On-time by departure window
  • 6–9 AM92%(100 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM73%(26 flights)
On-time trend by month
73%
May

Jun 87% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202597%31
September 202570%23
October 202593%29
May 202673%11
Departures on time
92%
Diverted
0%
Flights flown
130
Months covered
7

Keep nerding

Based on 131 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.