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(AS) Alaska Airlines 639 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(TPA) Tampa International Airport

Tampa, FL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
23
88%
Late
0
0%
Very Late
1
4%
Excessive
0
0%
Cancelled
0
0%
Diverted
2
8%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
24
Total Delays ( > 1 min )
3
Codeshares
0
Average Delay (min.)
16.333333333333332
Standard Deviation
15.3
Min
0
Max
34

AS 639 On-Time Performance Details

Overall Rating
4.3 of 5
Good
Percentage On-Time 96%
Average Delay Time 16.333333333333332 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.3 shows that this flight has on-time performance characteristics better than 85% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 96%
This flight has an on-time performance of 96%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 99% of other flights.
Delay Performance
3.6 of 5
Good
Average Delay Time 16.333333333333332 min
This flight has an average delay of 16.333333333333332 minutes with a standard deviation of 15.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.