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(DL) Delta Air Lines 977 On-Time Performance Rating

Date Range:

15-Feb-2025 to 15-Apr-2025

(SFO) San Francisco International Airport

San Francisco, CA, US

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
39
78%
Late
3
6%
Very Late
4
8%
Excessive
4
8%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
50
Total Delays ( > 1 min )
20
Codeshares
0
Average Delay (min.)
66.85
Standard Deviation
149.9
Min
0
Max
657

DL 977 On-Time Performance Details

Overall Rating
1.1 of 5
Poor
Percentage On-Time 78%
Average Delay Time 66.85 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.1 shows that this flight has on-time performance characteristics better than 20% of all other flights in the FlightStats database.
On-Time Performance Rating
2.1 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 42% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 66.85 min
This flight has an average delay of 66.85 minutes with a standard deviation of 149.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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