background

(CZ) China Southern Airlines 3977 On-Time Performance Rating

Date Range:

01-Jun-2026 to 31-Jul-2026

(SYX) Sanya Phoenix International Airport

Sanya, CN

(SZX) Shenzhen Bao'an International Airport

Shenzhen, CN

On-Time Performance Chart

(using rounded numbers)
On-Time
50
85%
Late
5
8%
Very Late
1
2%
Excessive
2
3%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
24
Codeshares
0
Average Delay (min.)
16.041666666666668
Standard Deviation
21.2
Min
0
Max
96

CZ 3977 On-Time Performance Details

Overall Rating
4.9 of 5
Very Good
Percentage On-Time 85%
Average Delay Time 16.041666666666668 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.9 shows that this flight has on-time performance characteristics better than 96% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. 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
4.8 of 5
Very Good
Average Delay Time 16.041666666666668 min
This flight has an average delay of 16.041666666666668 minutes with a standard deviation of 21.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 96% of other flights.