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(KE) Korean Air 3421 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(BOS) Boston Logan International Airport

Boston, MA, US

(DFW) Dallas Fort Worth International Airport

Dallas, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
51
84%
Late
6
10%
Very Late
0
0%
Excessive
3
5%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
17
Codeshares
61
Average Delay (min.)
28.529411764705884
Standard Deviation
40.4
Min
0
Max
176

KE 3421 On-Time Performance Details

Overall Rating
4.4 of 5
Good
Percentage On-Time 84%
Average Delay Time 28.529411764705884 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.4 shows that this flight has on-time performance characteristics better than 86% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very 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 98% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 28.529411764705884 min
This flight has an average delay of 28.529411764705884 minutes with a standard deviation of 40.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.