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Flight Reliability

AA 4921 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4921 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

75%
Arrive within 15 minutes
13 min
Average arrival delay
2.8%
Cancelled
3 min early
Median arrival delay

Based on 392 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon72%(61 flights)
  • Tue80%(45 flights)
  • Wed74%(53 flights)
  • Thu78%(58 flights)
  • Fri78%(50 flights)
  • Sat74%(54 flights)
  • Sun72%(60 flights)
On-time by departure window
  • 6–9 AM91%(33 flights)
  • 9 AM–12 PM78%(54 flights)
  • 12–3 PM73%(84 flights)
  • 3–6 PM69%(54 flights)
  • 6–9 PM76%(148 flights)
  • 9 PM–12 AM—(8 flights)
On-time trend by month
70%
May

Jun 90% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202587%30
August 202588%56
September 202576%38
October 202569%48
November 202558%24
December 202589%28
January 202681%16
March 202660%45
April 202661%31
May 202670%27
Departures on time
76%
Diverted
0%
Flights flown
381
Months covered
12

Keep nerding

Based on 392 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.