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(DL) Delta Air Lines 3840 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-2026

(ONT) Ontario International Airport

Ontario, CA, US

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
90%
Late
2
6%
Very Late
1
3%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
31
Total Delays ( > 1 min )
5
Codeshares
31
Average Delay (min.)
18.4
Standard Deviation
12.2
Min
0
Max
32

DL 3840 On-Time Performance Details

Overall Rating
4.2 of 5
Good
Percentage On-Time 90%
Average Delay Time 18.4 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.2 shows that this flight has on-time performance characteristics better than 82% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 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 95% of other flights.
Delay Performance
3.6 of 5
Good
Average Delay Time 18.4 min
This flight has an average delay of 18.4 minutes with a standard deviation of 12.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.

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