background

(DL) Delta Air Lines 1257 On-time Performance Rating

Date Range:

15-Jul-2018 to 15-Sep-2018

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(LAS) McCarran International Airport

Las Vegas, NV, US

On-Time Performance Chart

(using rounded numbers)
On-Time
12
63%
Late
2
11%
Very Late
2
11%
Excessive
3
16%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
10
Codeshares
0
Average Delay (min.)
29
Standard Deviation
24.5
Min
0
Max
74

DL 1257 On-time Performance Details

Overall Rating
1.9 of 5
Average
Percentage On-Time 63%
Average Delay Time 29 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.9 shows that this flight has on-time performance characteristics better than 36% of all other flights in the FlightStats database.
On-time Performance Rating
0.8 of 5
Poor
Percentage On-Time 63%
This flight has an on-time performance of 63%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 16% of other flights.
Delay Performance
2.9 of 5
Average
Average Delay Time 29 min
This flight has an average delay of 29 minutes with a standard deviation of 24.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.