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Flight Reliability

AA 4566 · American Airlines

Boston → New York (BOS–JFK)81% of its flights flew this route. The rest (RDU–LGA, ORD–CMH) are included in these numbers.

90
Nerd Approved
WanderNerd Reliability Score
90%
Arrive within 15 minutes
2 min early
Average arrival delay
1.9%
Cancelled
10 min early
Median arrival delay

Based on 314 historical flights. Data through May 2026.

What the data says

Saturday is the weak spot.

AA 4566 arrived on time 95% of the time on Fridays. On Saturdays: 80%.

Better than the BOS–JFK route average.

AA 4566 arrived on time 90% of the time, versus 76% across the BOS–JFK route.

Better than the American Airlines network average.

AA 4566 arrived on time 90% of the time, versus 77% across the American Airlines network.

Ticking up lately.

AA 4566 arrived on time 95% of the time over the last three months in the data, compared with 91% in the three months before that.

The breakdown

On-time by weekday
  • Mon93%(44 flights)
  • Tue93%(43 flights)
  • Wed88%(43 flights)
  • Thu86%(43 flights)
  • Fri95%(43 flights)
  • Sat80%(56 flights)
  • Sun94%(36 flights)
On-time by departure window
  • 6–9 AM92%(194 flights)
  • 9 AM–12 PM94%(97 flights)
  • 3–6 PM—(9 flights)
  • 6–9 PM—(8 flights)
On-time trend by month
95%
May

Jun 77% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202566%29
August 2025100%31
September 202597%30
October 202587%31
November 202593%29
December 202592%24
February 202688%16
March 202690%30
April 2026100%30
May 202695%19
Departures on time
90%
Diverted
0%
Flights flown
308
Months covered
12

Same route, other flights

Keep nerding

Based on 314 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.