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(UA) United Airlines 551 On-Time Performance Rating

Date Range:

01-Oct-2025 to 30-Nov-2025

(SAT) San Antonio International Airport

San Antonio, TX, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
31
89%
Late
1
3%
Very Late
0
0%
Excessive
3
9%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
35
Total Delays ( > 1 min )
8
Codeshares
0
Average Delay (min.)
44.125
Standard Deviation
51.7
Min
0
Max
141

UA 551 On-Time Performance Details

Overall Rating
2.9 of 5
Average
Percentage On-Time 89%
Average Delay Time 44.125 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.9 shows that this flight has on-time performance characteristics better than 57% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 89%
This flight has an on-time performance of 89%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 95% of other flights.
Delay Performance
1.1 of 5
Poor
Average Delay Time 44.125 min
This flight has an average delay of 44.125 minutes with a standard deviation of 51.7 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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