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(DL) Delta Air Lines 1238 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(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
4
80%
Late
0
0%
Very Late
0
0%
Excessive
1
20%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
5
Total Delays ( > 1 min )
2
Codeshares
0
Average Delay (min.)
29.5
Standard Deviation
30.4
Min
0
Max
51

DL 1238 On-Time Performance Details

Overall Rating
2.8 of 5
Average
Percentage On-Time 80%
Average Delay Time 29.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.8 shows that this flight has on-time performance characteristics better than 55% of all other flights in the FlightStats database.
On-Time Performance Rating
2.9 of 5
Average
Percentage On-Time 80%
This flight has an on-time performance of 80%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 58% of other flights.
Delay Performance
2.7 of 5
Average
Average Delay Time 29.5 min
This flight has an average delay of 29.5 minutes with a standard deviation of 30.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 54% of other flights.

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