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(UA) United Airlines 4735 On-Time Performance Rating

Date Range:

15-Nov-2025 to 15-Jan-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
6
33%
Late
5
28%
Very Late
1
6%
Excessive
6
33%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
18
Total Delays ( > 1 min )
16
Codeshares
18
Average Delay (min.)
51.3125
Standard Deviation
73.8
Min
0
Max
305

UA 4735 On-Time Performance Details

Overall Rating
0.4 of 5
Very Poor
Percentage On-Time 33%
Average Delay Time 51.3125 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.4 shows that this flight has on-time performance characteristics better than 6% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 33%
This flight has an on-time performance of 33%. 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
0.7 of 5
Poor
Average Delay Time 51.3125 min
This flight has an average delay of 51.3125 minutes with a standard deviation of 73.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 14% of other flights.

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