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(KE) Korean Air 6638 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(YYC) Calgary International Airport

Calgary, AB, CA

On-Time Performance Chart

(using rounded numbers)
On-Time
33
66%
Late
6
12%
Very Late
5
10%
Excessive
6
12%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
50
Total Delays ( > 1 min )
26
Codeshares
50
Average Delay (min.)
27.346153846153847
Standard Deviation
17.6
Min
0
Max
57

KE 6638 On-Time Performance Details

Overall Rating
2.1 of 5
Average
Percentage On-Time 66%
Average Delay Time 27.346153846153847 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.1 shows that this flight has on-time performance characteristics better than 40% of all other flights in the FlightStats database.
On-Time Performance Rating
0.3 of 5
Very Poor
Percentage On-Time 66%
This flight has an on-time performance of 66%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 7% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 27.346153846153847 min
This flight has an average delay of 27.346153846153847 minutes with a standard deviation of 17.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.