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(WS) WestJet 8373 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(ONT) Ontario International Airport

Ontario, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
31
84%
Late
1
3%
Very Late
1
3%
Excessive
4
11%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
15
Codeshares
37
Average Delay (min.)
27.533333333333335
Standard Deviation
40.9
Min
0
Max
155

WS 8373 On-Time Performance Details

Overall Rating
3.5 of 5
Average
Percentage On-Time 84%
Average Delay Time 27.533333333333335 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.5 shows that this flight has on-time performance characteristics better than 68% of all other flights in the FlightStats database.
On-Time Performance Rating
3.8 of 5
Good
Percentage On-Time 84%
This flight has an on-time performance of 84%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 76% of other flights.
Delay Performance
3.1 of 5
Average
Average Delay Time 27.533333333333335 min
This flight has an average delay of 27.533333333333335 minutes with a standard deviation of 40.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 62% of other flights.