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(UA) United Airlines 4661 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(BOI) Boise Air Terminal

Boise, ID, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
42%
Late
3
9%
Very Late
4
12%
Excessive
12
36%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
33
Total Delays ( > 1 min )
25
Codeshares
33
Average Delay (min.)
47.4
Standard Deviation
36.3
Min
0
Max
166

UA 4661 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 42%
Average Delay Time 47.4 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.6 shows that this flight has on-time performance characteristics better than 10% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 42%
This flight has an on-time performance of 42%. 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
1.1 of 5
Poor
Average Delay Time 47.4 min
This flight has an average delay of 47.4 minutes with a standard deviation of 36.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 21% of other flights.

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