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Flight Reliability

AA 1840 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 1840 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

72%
Arrive within 15 minutes
17 min
Average arrival delay
3.3%
Cancelled
4 min early
Median arrival delay

Based on 428 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(63 flights)
  • Tue83%(64 flights)
  • Wed81%(63 flights)
  • Thu62%(61 flights)
  • Fri73%(62 flights)
  • Sat68%(40 flights)
  • Sun62%(60 flights)
On-time by departure window
  • 6–9 AM—(7 flights)
  • 9 AM–12 PM79%(77 flights)
  • 12–3 PM75%(71 flights)
  • 3–6 PM77%(30 flights)
  • 6–9 PM80%(44 flights)
  • 9 PM–12 AM65%(184 flights)
On-time trend by month
76%
May

Jun 44% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202544%27
July 202545%29
August 202546%28
September 202583%29
October 202577%30
November 202582%27
December 202580%40
January 202687%30
February 202671%42
March 202668%38
April 202688%48
May 202676%45
Departures on time
68%
Diverted
0.2%
Flights flown
413
Months covered
12

Keep nerding

Based on 428 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.