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(AA) American Airlines 4521 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(BDL) Bradley International Airport

Hartford, CT, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
20
51%
Late
4
10%
Very Late
4
10%
Excessive
7
18%
Cancelled
2
5%
Diverted
2
5%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
16
Codeshares
37
Average Delay (min.)
58.0625
Standard Deviation
45.8
Min
0
Max
147

AA 4521 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 54%
Average Delay Time 58.0625 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.1 shows that this flight has on-time performance characteristics better than 1% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 54%
This flight has an on-time performance of 54%. 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
0.2 of 5
Very Poor
Average Delay Time 58.0625 min
This flight has an average delay of 58.0625 minutes with a standard deviation of 45.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 4% of other flights.

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