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(DL) Delta Air Lines 631 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(AUS) Austin-Bergstrom International Airport

Austin, TX, US

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
15
68%
Late
3
14%
Very Late
3
14%
Excessive
1
5%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
22
Total Delays ( > 1 min )
10
Codeshares
0
Average Delay (min.)
35.6
Standard Deviation
50
Min
0
Max
172

DL 631 On-Time Performance Details

Overall Rating
1.3 of 5
Poor
Percentage On-Time 68%
Average Delay Time 35.6 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.3 shows that this flight has on-time performance characteristics better than 25% of all other flights in the FlightStats database.
On-Time Performance Rating
0.7 of 5
Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 14% of other flights.
Delay Performance
1.9 of 5
Average
Average Delay Time 35.6 min
This flight has an average delay of 35.6 minutes with a standard deviation of 50 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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