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

Date Range:

01-Aug-2025 to 30-Sep-2025

(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
22
76%
Late
2
7%
Very Late
1
3%
Excessive
4
14%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
29
Total Delays ( > 1 min )
10
Codeshares
0
Average Delay (min.)
37.8
Standard Deviation
27.4
Min
0
Max
84

DL 635 On-Time Performance Details

Overall Rating
2.3 of 5
Average
Percentage On-Time 76%
Average Delay Time 37.8 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.3 shows that this flight has on-time performance characteristics better than 45% of all other flights in the FlightStats database.
On-Time Performance Rating
2.7 of 5
Average
Percentage On-Time 76%
This flight has an on-time performance of 76%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 54% of other flights.
Delay Performance
1.9 of 5
Average
Average Delay Time 37.8 min
This flight has an average delay of 37.8 minutes with a standard deviation of 27.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

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