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(UA) United Airlines 366 On-Time Performance Rating

Date Range:

15-Aug-2025 to 15-Oct-2025

(BOS) Boston Logan International Airport

Boston, MA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
36
97%
Late
1
3%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
3
Codeshares
0
Average Delay (min.)
10
Standard Deviation
7
Min
0
Max
15

UA 366 On-Time Performance Details

Overall Rating
4.4 of 5
Good
Percentage On-Time 97%
Average Delay Time 10 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.4 shows that this flight has on-time performance characteristics better than 87% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 97%
This flight has an on-time performance of 97%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 10 min
This flight has an average delay of 10 minutes with a standard deviation of 7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.

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