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(DL) Delta Air Lines 635 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(SFO) San Francisco International Airport

San Francisco, CA, US

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
20
61%
Late
8
24%
Very Late
1
3%
Excessive
4
12%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
33
Total Delays ( > 1 min )
19
Codeshares
0
Average Delay (min.)
26.36842105263158
Standard Deviation
20.7
Min
0
Max
71

DL 635 On-Time Performance Details

Overall Rating
1.9 of 5
Average
Percentage On-Time 61%
Average Delay Time 26.36842105263158 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
0.1 of 5
Very Poor
Percentage On-Time 61%
This flight has an on-time performance of 61%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 2% of other flights.
Delay Performance
3.6 of 5
Good
Average Delay Time 26.36842105263158 min
This flight has an average delay of 26.36842105263158 minutes with a standard deviation of 20.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.

Other Stops for DL 635