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Flight Reliability

AA 3178 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3178 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

66%
Arrive within 15 minutes
25 min
Average arrival delay
3.9%
Cancelled
2 min
Median arrival delay

Based on 336 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(50 flights)
  • Tue82%(39 flights)
  • Wed78%(40 flights)
  • Thu58%(48 flights)
  • Fri65%(51 flights)
  • Sat74%(49 flights)
  • Sun48%(46 flights)
On-time by departure window
  • 3–6 PM52%(29 flights)
  • 6–9 PM69%(251 flights)
  • 9 PM–12 AM63%(43 flights)
On-time trend by month
68%
May

Jun 65% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%20
July 202530%20
August 202557%28
September 202580%30
October 202574%31
November 202557%28
December 202562%26
January 202667%24
February 202671%28
March 202670%27
April 202680%30
May 202668%31
Departures on time
67%
Diverted
0%
Flights flown
323
Months covered
12

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.