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Flight Reliability

AA 3873 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3873 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

83%
Arrive within 15 minutes
6 min
Average arrival delay
4.4%
Cancelled
2 min early
Median arrival delay

Based on 458 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(62 flights)
  • Tue77%(53 flights)
  • Wed86%(57 flights)
  • Thu89%(70 flights)
  • Fri87%(63 flights)
  • Sat86%(64 flights)
  • Sun85%(68 flights)
On-time by departure window
  • 6–9 AM84%(32 flights)
  • 9 AM–12 PM84%(269 flights)
  • 12–3 PM77%(47 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM82%(68 flights)
  • 9 PM–12 AM80%(20 flights)
On-time trend by month
87%
May

Jun 74% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%53
July 202585%60
August 202582%60
September 2025100%18
October 202596%46
November 202579%53
December 202577%39
February 202677%17
March 202682%28
April 202682%28
May 202687%30
Departures on time
80%
Diverted
0.2%
Flights flown
437
Months covered
12

Keep nerding

Based on 458 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.