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Flight Reliability

AA 4155 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4155 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

84%
Arrive within 15 minutes
1 min early
Average arrival delay
1.6%
Cancelled
10 min early
Median arrival delay

Based on 438 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon86%(66 flights)
  • Tue87%(52 flights)
  • Wed78%(55 flights)
  • Thu91%(67 flights)
  • Fri82%(66 flights)
  • Sat75%(56 flights)
  • Sun84%(68 flights)
On-time by departure window
  • 9 AM–12 PM91%(32 flights)
  • 12–3 PM85%(170 flights)
  • 3–6 PM82%(224 flights)
  • 6–9 PM—(4 flights)
On-time trend by month
87%
May

Aug 80% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202580%25
September 202587%55
October 202595%38
November 202578%55
December 202580%30
January 202680%10
February 202684%32
March 202689%61
April 202673%60
May 202687%60
Departures on time
82%
Diverted
0.2%
Flights flown
430
Months covered
11

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.