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(WS) WestJet 8641 On-Time Performance Rating

Date Range:

01-Sep-2025 to 31-Oct-2025

(SFO) San Francisco International Airport

San Francisco, CA, US

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
69%
Late
2
15%
Very Late
0
0%
Excessive
2
15%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
13
Total Delays ( > 1 min )
5
Codeshares
13
Average Delay (min.)
26.6
Standard Deviation
20.2
Min
0
Max
51

WS 8641 On-Time Performance Details

Overall Rating
2.1 of 5
Average
Percentage On-Time 69%
Average Delay Time 26.6 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 40% of all other flights in the FlightStats database.
On-Time Performance Rating
1.2 of 5
Poor
Percentage On-Time 69%
This flight has an on-time performance of 69%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.
Delay Performance
2.9 of 5
Average
Average Delay Time 26.6 min
This flight has an average delay of 26.6 minutes with a standard deviation of 20.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.

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