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(CZ) China Southern Airlines 1634 On-Time Performance Rating

Date Range:

15-Mar-2025 to 15-May-2025

(SFO) San Francisco International Airport

San Francisco, CA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
31
86%
Late
2
6%
Very Late
1
3%
Excessive
1
3%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
35
Total Delays ( > 1 min )
10
Codeshares
35
Average Delay (min.)
21.1
Standard Deviation
23
Min
0
Max
80

CZ 1634 On-Time Performance Details

Overall Rating
4.2 of 5
Good
Percentage On-Time 89%
Average Delay Time 21.1 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.2 shows that this flight has on-time performance characteristics better than 82% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 89%
This flight has an on-time performance of 89%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 95% of other flights.
Delay Performance
3.6 of 5
Good
Average Delay Time 21.1 min
This flight has an average delay of 21.1 minutes with a standard deviation of 23 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.