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Flight Reliability

AA 3855 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3855 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

78%
Arrive within 15 minutes
13 min
Average arrival delay
2.9%
Cancelled
6 min early
Median arrival delay

Based on 485 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(71 flights)
  • Tue81%(58 flights)
  • Wed76%(53 flights)
  • Thu75%(69 flights)
  • Fri92%(71 flights)
  • Sat78%(77 flights)
  • Sun65%(71 flights)
On-time by departure window
  • 6–9 AM68%(59 flights)
  • 9 AM–12 PM82%(17 flights)
  • 12–3 PM80%(340 flights)
  • 3–6 PM72%(36 flights)
  • 6–9 PM67%(18 flights)
On-time trend by month
64%
May

Jun 72% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%54
July 202568%62
August 202586%58
September 202588%58
October 202584%62
November 202568%19
December 202579%38
January 202685%33
February 202695%20
March 202656%16
April 202664%28
May 202664%22
Departures on time
80%
Diverted
0.2%
Flights flown
470
Months covered
12

Keep nerding

Based on 485 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.