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(AA) American Airlines 4521 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(LGA) New York LaGuardia Airport

New York, NY, US

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
29
56%
Late
5
10%
Very Late
7
13%
Excessive
9
17%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
51
Total Delays ( > 1 min )
27
Codeshares
51
Average Delay (min.)
45.22222222222222
Standard Deviation
40.4
Min
0
Max
158

AA 4521 On-Time Performance Details

Overall Rating
0.2 of 5
Very Poor
Percentage On-Time 57%
Average Delay Time 45.22222222222222 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.2 shows that this flight has on-time performance characteristics better than 3% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 57%
This flight has an on-time performance of 57%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
0.4 of 5
Very Poor
Average Delay Time 45.22222222222222 min
This flight has an average delay of 45.22222222222222 minutes with a standard deviation of 40.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.

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