background

(UA) United Airlines 551 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-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
3
50%
Late
1
17%
Very Late
0
0%
Excessive
2
33%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
6
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
23.166666666666668
Standard Deviation
20.7
Min
2
Max
51

UA 551 On-Time Performance Details

Overall Rating
1.9 of 5
Average
Percentage On-Time 50%
Average Delay Time 23.166666666666668 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
0.3 of 5
Very Poor
Percentage On-Time 50%
This flight has an on-time performance of 50%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 7% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 23.166666666666668 min
This flight has an average delay of 23.166666666666668 minutes with a standard deviation of 20.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.

Other Stops for UA 551