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Flight Reliability

AA 3940 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3940 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

90%
Arrive within 15 minutes
1 min early
Average arrival delay
0.5%
Cancelled
8 min early
Median arrival delay

Based on 392 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(57 flights)
  • Tue89%(47 flights)
  • Wed97%(59 flights)
  • Thu91%(53 flights)
  • Fri83%(53 flights)
  • Sat93%(60 flights)
  • Sun89%(61 flights)
On-time by departure window
  • 3–6 AM—(8 flights)
  • 6–9 AM95%(105 flights)
  • 9 AM–12 PM90%(198 flights)
  • 12–3 PM96%(24 flights)
  • 3–6 PM76%(55 flights)
On-time trend by month
95%
May

Jun 93% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%56
July 202593%60
August 202583%35
September 202595%57
October 2025100%10
November 202574%23
December 202591%34
January 202640%10
March 202694%49
April 202694%32
May 202695%21
Departures on time
91%
Diverted
0%
Flights flown
390
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.