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(9C) Spring Airlines 8521 On-Time Performance Rating

Date Range:

01-Apr-2026 to 31-May-2026

(PVG) Shanghai Pudong International Airport

Shanghai, CN

(HKT) Phuket International Airport

Phuket, TH

On-Time Performance Chart

(using rounded numbers)
On-Time
44
80%
Late
6
11%
Very Late
1
2%
Excessive
4
7%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
55
Total Delays ( > 1 min )
27
Codeshares
0
Average Delay (min.)
20.444444444444443
Standard Deviation
26.8
Min
0
Max
108

9C 8521 On-Time Performance Details

Overall Rating
3.6 of 5
Good
Percentage On-Time 80%
Average Delay Time 20.444444444444443 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.6 shows that this flight has on-time performance characteristics better than 70% of all other flights in the FlightStats database.
On-Time Performance Rating
2.9 of 5
Average
Percentage On-Time 80%
This flight has an on-time performance of 80%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 58% of other flights.
Delay Performance
4.2 of 5
Good
Average Delay Time 20.444444444444443 min
This flight has an average delay of 20.444444444444443 minutes with a standard deviation of 26.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 84% of other flights.