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(KE) Korean Air 6638 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-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
37
67%
Late
4
7%
Very Late
0
0%
Excessive
12
22%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
54
Total Delays ( > 1 min )
24
Codeshares
54
Average Delay (min.)
54.666666666666664
Standard Deviation
70.5
Min
0
Max
288

KE 6638 On-Time Performance Details

Overall Rating
0.7 of 5
Poor
Percentage On-Time 69%
Average Delay Time 54.666666666666664 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.7 shows that this flight has on-time performance characteristics better than 13% of all other flights in the FlightStats database.
On-Time Performance Rating
1.1 of 5
Poor
Percentage On-Time 69%
This flight has an on-time performance of 69%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 21% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 54.666666666666664 min
This flight has an average delay of 54.666666666666664 minutes with a standard deviation of 70.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 5% of other flights.