background

(UA) United Airlines 477 On-time Performance Rating

Date Range:

15-Jul-2018 to 15-Sep-2018

(BOS) Logan International Airport

Boston, MA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
55
85%
Late
3
5%
Very Late
0
0%
Excessive
5
8%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
64
Total Delays ( > 1 min )
19
Codeshares
0
Average Delay (min.)
61
Standard Deviation
145.8
Min
0
Max
632

UA 477 On-time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 86%
Average Delay Time 61 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 50% of all other flights in the FlightStats database.
On-time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 86%
This flight has an on-time performance of 86%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 99% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 61 min
This flight has an average delay of 61 minutes with a standard deviation of 145.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.