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(UA) United Airlines 4639 On-Time Performance Rating

Date Range:

15-Mar-2024 to 15-May-2024

(ONT) Ontario International Airport

Ontario, CA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
27
44%
Late
8
13%
Very Late
13
21%
Excessive
13
21%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
49
Codeshares
61
Average Delay (min.)
34.142857142857146
Standard Deviation
27.1
Min
0
Max
148

UA 4639 On-Time Performance Details

Overall Rating
1.1 of 5
Poor
Percentage On-Time 44%
Average Delay Time 34.142857142857146 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.1 shows that this flight has on-time performance characteristics better than 20% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 44%
This flight has an on-time performance of 44%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 34.142857142857146 min
This flight has an average delay of 34.142857142857146 minutes with a standard deviation of 27.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.