(WS) WestJet 8158 On-Time Performance Rating

Date Range:

15-Jun-2025 to 15-Aug-2025

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)

On-Time

90%

Late

Very Late

10%

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

8.6

Standard Deviation

13.6

Min

Max

WS 8158 On-Time Performance Details

Overall Rating

4.5 of 5

Good

Percentage On-Time 90%

Average Delay Time 8.6 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.5 shows that this flight has on-time performance characteristics better than 88% 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

4.3 of 5

Good

Average Delay Time 8.6 min

This flight has an average delay of 8.6 minutes with a standard deviation of 13.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 86% of other flights.