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(UA) United Airlines 639 On-time Performance Rating

Date Range:

01-Nov-2018 to 31-Dec-2018

(SFO) San Francisco International Airport

San Francisco, CA, US

(ORD) O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
45
74%
Late
6
10%
Very Late
4
7%
Excessive
6
10%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
30
Codeshares
0
Average Delay (min.)
40
Standard Deviation
63.3
Min
0
Max
274

UA 639 On-time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 74%
Average Delay Time 40 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 14% of all other flights in the FlightStats database.
On-time Performance Rating
1.2 of 5
Poor
Percentage On-Time 74%
This flight has an on-time performance of 74%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 40 min
This flight has an average delay of 40 minutes with a standard deviation of 63.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 7% of other flights.