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(WS) WestJet 8641 On-Time Performance Rating

Date Range:

01-Sep-2025 to 31-Oct-2025

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
18
90%
Late
0
0%
Very Late
0
0%
Excessive
2
10%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
6
Codeshares
20
Average Delay (min.)
54.166666666666664
Standard Deviation
82.6
Min
0
Max
204

WS 8641 On-Time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 90%
Average Delay Time 54.166666666666664 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 51% of all other flights in the FlightStats database.
On-Time Performance Rating
4.6 of 5
Very Good
Percentage On-Time 90%
This flight has an on-time performance of 90%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 92% of other flights.
Delay Performance
0.6 of 5
Poor
Average Delay Time 54.166666666666664 min
This flight has an average delay of 54.166666666666664 minutes with a standard deviation of 82.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 12% of other flights.

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