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(DL) Delta Air Lines 4638 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

(TRI) Tri-Cities Regional Airport

Bristol, VA/Johnson City/Kingsport, TN, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
82%
Late
2
12%
Very Late
0
0%
Excessive
1
6%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
17
Total Delays ( > 1 min )
4
Codeshares
17
Average Delay (min.)
99
Standard Deviation
161.7
Min
0
Max
341

DL 4638 On-Time Performance Details

Overall Rating
2.1 of 5
Average
Percentage On-Time 82%
Average Delay Time 99 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.1 shows that this flight has on-time performance characteristics better than 41% of all other flights in the FlightStats database.
On-Time Performance Rating
4.1 of 5
Good
Percentage On-Time 82%
This flight has an on-time performance of 82%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 82% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 99 min
This flight has an average delay of 99 minutes with a standard deviation of 161.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.

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