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(AA) American Airlines 4521 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(BDL) Bradley International Airport

Hartford, CT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
25
66%
Late
0
0%
Very Late
1
3%
Excessive
9
24%
Cancelled
2
5%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
13
Codeshares
37
Average Delay (min.)
60.23076923076923
Standard Deviation
46.1
Min
0
Max
163

AA 4521 On-Time Performance Details

Overall Rating
0.4 of 5
Very Poor
Percentage On-Time 68%
Average Delay Time 60.23076923076923 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.4 shows that this flight has on-time performance characteristics better than 6% of all other flights in the FlightStats database.
On-Time Performance Rating
0.5 of 5
Very Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 10% of other flights.
Delay Performance
0.2 of 5
Very Poor
Average Delay Time 60.23076923076923 min
This flight has an average delay of 60.23076923076923 minutes with a standard deviation of 46.1 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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