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(UA) United Airlines 1229 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-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
10
67%
Late
1
7%
Very Late
3
20%
Excessive
1
7%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
15
Total Delays ( > 1 min )
9
Codeshares
0
Average Delay (min.)
41.22222222222222
Standard Deviation
69.8
Min
0
Max
223

UA 1229 On-Time Performance Details

Overall Rating
1.8 of 5
Average
Percentage On-Time 67%
Average Delay Time 41.22222222222222 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 35% of all other flights in the FlightStats database.
On-Time Performance Rating
1.5 of 5
Poor
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 31% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 41.22222222222222 min
This flight has an average delay of 41.22222222222222 minutes with a standard deviation of 69.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.

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