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(DL) Delta Air Lines 3521 On-time Performance Rating

Date Range:

01-Jun-2018 to 31-Jul-2018

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
17
81%
Late
1
5%
Very Late
0
0%
Excessive
2
10%
Cancelled
0
0%
Diverted
1
5%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
6
Codeshares
20
Average Delay (min.)
141
Standard Deviation
288.4
Min
1
Max
727

DL 3521 On-time Performance Details

Overall Rating
2.4 of 5
Average
Percentage On-Time 85%
Average Delay Time 141 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 46% of all other flights in the FlightStats database.
On-time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 93% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 141 min
This flight has an average delay of 141 minutes with a standard deviation of 288.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.