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(DL) Delta Air Lines 4089 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

(GRR) Grand Rapids Gerald R. Ford International Airport

Grand Rapids, MI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
20
87%
Late
0
0%
Very Late
0
0%
Excessive
1
4%
Cancelled
1
4%
Diverted
1
4%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
22
Total Delays ( > 1 min )
3
Codeshares
22
Average Delay (min.)
62
Standard Deviation
97.9
Min
0
Max
175

DL 4089 On-Time Performance Details

Overall Rating
3.0 of 5
Average
Percentage On-Time 91%
Average Delay Time 62 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3 shows that this flight has on-time performance characteristics better than 58% of all other flights in the FlightStats database.
On-Time Performance Rating
4.8 of 5
Very Good
Percentage On-Time 91%
This flight has an on-time performance of 91%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 96% of other flights.
Delay Performance
1.1 of 5
Poor
Average Delay Time 62 min
This flight has an average delay of 62 minutes with a standard deviation of 97.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 21% of other flights.

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