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(DL) Delta Air Lines 4149 On-Time Performance Rating

Date Range:

01-Sep-2025 to 31-Oct-2025

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
35
90%
Late
0
0%
Very Late
0
0%
Excessive
4
10%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
39
Total Delays ( > 1 min )
8
Codeshares
39
Average Delay (min.)
35.75
Standard Deviation
39.7
Min
0
Max
107

DL 4149 On-Time Performance Details

Overall Rating
3.3 of 5
Average
Percentage On-Time 90%
Average Delay Time 35.75 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.3 shows that this flight has on-time performance characteristics better than 65% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 90%
This flight has an on-time performance of 90%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 97% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 35.75 min
This flight has an average delay of 35.75 minutes with a standard deviation of 39.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.

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