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(WS) WestJet 5521 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
13
76%
Late
2
12%
Very Late
0
0%
Excessive
2
12%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
17
Total Delays ( > 1 min )
6
Codeshares
17
Average Delay (min.)
55.5
Standard Deviation
65.8
Min
0
Max
142

WS 5521 On-Time Performance Details

Overall Rating
1.3 of 5
Poor
Percentage On-Time 77%
Average Delay Time 55.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.3 shows that this flight has on-time performance characteristics better than 25% of all other flights in the FlightStats database.
On-Time Performance Rating
1.9 of 5
Average
Percentage On-Time 77%
This flight has an on-time performance of 77%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 38% of other flights.
Delay Performance
0.7 of 5
Poor
Average Delay Time 55.5 min
This flight has an average delay of 55.5 minutes with a standard deviation of 65.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 14% of other flights.

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