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(DL) Delta Air Lines 3631 On-Time Performance Rating

Date Range:

01-Sep-2025 to 31-Oct-2025

(MDW) Chicago Midway International Airport

Chicago, IL, US

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
56
90%
Late
0
0%
Very Late
4
6%
Excessive
1
2%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
14
Codeshares
61
Average Delay (min.)
23.071428571428573
Standard Deviation
32.1
Min
0
Max
123

DL 3631 On-Time Performance Details

Overall Rating
4.3 of 5
Good
Percentage On-Time 92%
Average Delay Time 23.071428571428573 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.3 shows that this flight has on-time performance characteristics better than 84% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 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 100% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 23.071428571428573 min
This flight has an average delay of 23.071428571428573 minutes with a standard deviation of 32.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.