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(WS) WestJet 8811 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
51
88%
Late
4
7%
Very Late
0
0%
Excessive
1
2%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
57
Total Delays ( > 1 min )
13
Codeshares
57
Average Delay (min.)
37.92307692307692
Standard Deviation
100.3
Min
0
Max
371

WS 8811 On-Time Performance Details

Overall Rating
3.4 of 5
Average
Percentage On-Time 90%
Average Delay Time 37.92307692307692 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.4 shows that this flight has on-time performance characteristics better than 66% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 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 100% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 37.92307692307692 min
This flight has an average delay of 37.92307692307692 minutes with a standard deviation of 100.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.