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(AA) American Airlines 4378 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(BOS) Boston Logan International Airport

Boston, MA, US

(LGA) New York LaGuardia Airport

New York, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
36
90%
Late
2
5%
Very Late
0
0%
Excessive
1
3%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
39
Total Delays ( > 1 min )
6
Codeshares
39
Average Delay (min.)
20.833333333333332
Standard Deviation
18.8
Min
0
Max
58

AA 4378 On-Time Performance Details

Overall Rating
4.2 of 5
Good
Percentage On-Time 92%
Average Delay Time 20.833333333333332 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.2 shows that this flight has on-time performance characteristics better than 83% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 92%
This flight has an on-time performance of 92%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 20.833333333333332 min
This flight has an average delay of 20.833333333333332 minutes with a standard deviation of 18.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.

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