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(DL) Delta Air Lines 4120 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

(ROC) Frederick Douglass Greater Rochester Intl Airport

Rochester, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
27
77%
Late
0
0%
Very Late
1
3%
Excessive
6
17%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
34
Total Delays ( > 1 min )
11
Codeshares
34
Average Delay (min.)
62
Standard Deviation
51
Min
0
Max
152

DL 4120 On-Time Performance Details

Overall Rating
2.0 of 5
Average
Percentage On-Time 79%
Average Delay Time 62 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2 shows that this flight has on-time performance characteristics better than 39% of all other flights in the FlightStats database.
On-Time Performance Rating
3.6 of 5
Good
Percentage On-Time 79%
This flight has an on-time performance of 79%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 73% of other flights.
Delay Performance
0.4 of 5
Very Poor
Average Delay Time 62 min
This flight has an average delay of 62 minutes with a standard deviation of 51 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.

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