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(UA) United Airlines 639 On-time Performance Rating

Date Range:

01-May-2018 to 30-Jun-2018

(SFO) San Francisco International AirportSan Francisco, CA, US
(ORD) O'Hare International AirportChicago, IL, US
On-Time Performance Chart
(using rounded numbers)
On-Time
44
69%
Late
6
9%
Very Late
2
3%
Excessive
11
17%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
63
Total Delays ( > 1 min )
44
Codeshares
0
Average Delay (min.)
32
Standard Deviation
55.4
Min
0
Max
312
UA 639 On-time Performance Details
Overall Rating
1.7 of 5
Average
Percentage On-Time 70%
Average Delay Time 32 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.
On-time Performance Rating
1.2 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. 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
2.1 of 5
Average
Average Delay Time 32 min
This flight has an average delay of 32 minutes with a standard deviation of 55.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.