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(DL) Delta Air Lines 517 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
50
83%
Late
3
5%
Very Late
3
5%
Excessive
4
7%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
23
Codeshares
0
Average Delay (min.)
26.347826086956523
Standard Deviation
33.4
Min
0
Max
148

DL 517 On-Time Performance Details

Overall Rating
4.0 of 5
Good
Percentage On-Time 83%
Average Delay Time 26.347826086956523 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4 shows that this flight has on-time performance characteristics better than 79% of all other flights in the FlightStats database.
On-Time Performance Rating
4.4 of 5
Good
Percentage On-Time 83%
This flight has an on-time performance of 83%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 88% of other flights.
Delay Performance
3.6 of 5
Good
Average Delay Time 26.347826086956523 min
This flight has an average delay of 26.347826086956523 minutes with a standard deviation of 33.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.