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Flight Reliability

AA 4042 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 4042 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

70%
Arrive within 15 minutes
17 min
Average arrival delay
3.3%
Cancelled
1 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(54 flights)
  • Tue72%(46 flights)
  • Wed67%(46 flights)
  • Thu64%(56 flights)
  • Fri72%(53 flights)
  • Sat74%(46 flights)
  • Sun66%(50 flights)
On-time by departure window
  • 6–9 AM90%(41 flights)
  • 9 AM–12 PM60%(42 flights)
  • 12–3 PM—(3 flights)
  • 3–6 PM49%(63 flights)
  • 6–9 PM71%(160 flights)
  • 9 PM–12 AM86%(42 flights)
On-time trend by month
77%
May

Jun 53% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%30
July 202546%26
August 202581%31
September 202589%28
October 202567%57
November 202575%20
December 202571%14
January 202662%29
February 202667%27
March 202676%29
April 202677%30
May 202677%30
Departures on time
75%
Diverted
0%
Flights flown
351
Months covered
12

Keep nerding

Based on 363 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.