Skip to content
WanderNerd
Check a flight

Flight Reliability

AA 1866 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 1866 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
15 min
Average arrival delay
1.8%
Cancelled
4 min early
Median arrival delay

Based on 557 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(76 flights)
  • Tue74%(77 flights)
  • Wed79%(81 flights)
  • Thu72%(76 flights)
  • Fri59%(78 flights)
  • Sat68%(78 flights)
  • Sun69%(77 flights)
On-time by departure window
  • 3–6 AM91%(22 flights)
  • 6–9 AM89%(75 flights)
  • 9 AM–12 PM83%(180 flights)
  • 12–3 PM63%(166 flights)
  • 3–6 PM53%(15 flights)
  • 6–9 PM51%(85 flights)
On-time trend by month
94%
May

Jun 75% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%59
July 202557%56
August 202581%62
September 202573%60
October 202566%59
November 202597%29
December 202565%31
January 202667%27
February 202641%27
March 202650%30
April 202682%54
May 202694%49
Departures on time
72%
Diverted
0.7%
Flights flown
543
Months covered
12

Keep nerding

Based on 557 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.