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(OZ) Asiana Airlines 521 On-Time Performance Rating

Date Range:

15-Jun-2025 to 15-Aug-2025

(ICN) Seoul Incheon International Airport

Seoul, KR

(LHR) London Heathrow Airport

London, EN, GB

On-Time Performance Chart

(using rounded numbers)
On-Time
27
55%
Late
6
12%
Very Late
7
14%
Excessive
9
18%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
49
Total Delays ( > 1 min )
31
Codeshares
0
Average Delay (min.)
37.935483870967744
Standard Deviation
41.6
Min
0
Max
208

OZ 521 On-Time Performance Details

Overall Rating
1.2 of 5
Poor
Percentage On-Time 55%
Average Delay Time 37.935483870967744 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.2 shows that this flight has on-time performance characteristics better than 22% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 55%
This flight has an on-time performance of 55%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
2.3 of 5
Average
Average Delay Time 37.935483870967744 min
This flight has an average delay of 37.935483870967744 minutes with a standard deviation of 41.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 46% of other flights.