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(UA) United Airlines 1229 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
13
76%
Late
1
6%
Very Late
2
12%
Excessive
1
6%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
17
Total Delays ( > 1 min )
8
Codeshares
0
Average Delay (min.)
40.875
Standard Deviation
74.6
Min
0
Max
223

UA 1229 On-Time Performance Details

Overall Rating
1.9 of 5
Average
Percentage On-Time 77%
Average Delay Time 40.875 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.9 shows that this flight has on-time performance characteristics better than 37% of all other flights in the FlightStats database.
On-Time Performance Rating
2.3 of 5
Average
Percentage On-Time 77%
This flight has an on-time performance of 77%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 46% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 40.875 min
This flight has an average delay of 40.875 minutes with a standard deviation of 74.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.

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