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(JL) JAL 7491 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(BOS) Boston Logan International Airport

Boston, MA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
40
68%
Late
3
5%
Very Late
2
3%
Excessive
7
12%
Cancelled
5
8%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
57
Total Delays ( > 1 min )
19
Codeshares
57
Average Delay (min.)
45.05263157894737
Standard Deviation
50.6
Min
0
Max
159

JL 7491 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 70%
Average Delay Time 45.05263157894737 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 14% of all other flights in the FlightStats database.
On-Time Performance Rating
0.7 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 14% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 45.05263157894737 min
This flight has an average delay of 45.05263157894737 minutes with a standard deviation of 50.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.