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Flight Reliability

AA 4120 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4120 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
11 min
Average arrival delay
0.9%
Cancelled
6 min early
Median arrival delay

Based on 336 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(46 flights)
  • Tue80%(50 flights)
  • Wed85%(47 flights)
  • Thu73%(48 flights)
  • Fri77%(48 flights)
  • Sat82%(44 flights)
  • Sun84%(49 flights)
On-time by departure window
  • 3–6 AM86%(57 flights)
  • 6–9 AM87%(150 flights)
  • 3–6 PM58%(36 flights)
  • 6–9 PM66%(89 flights)
On-time trend by month
93%
May

Jun 89% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%26
July 202571%31
August 202581%31
September 2025100%30
October 202597%31
November 202577%30
December 202581%26
January 202650%54
February 202686%22
April 202657%21
May 202693%30
Departures on time
79%
Diverted
0.3%
Flights flown
332
Months covered
11

Keep nerding

Based on 336 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.