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(UA) United Airlines 577 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
2
67%
Late
0
0%
Very Late
0
0%
Excessive
1
33%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
3
Total Delays ( > 1 min )
1
Codeshares
0
Average Delay (min.)
114
Standard Deviation
0
Min
0
Max
114

UA 577 On-Time Performance Details

Overall Rating
1.0 of 5
Poor
Percentage On-Time 67%
Average Delay Time 114 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1 shows that this flight has on-time performance characteristics better than 18% 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
0.4 of 5
Very Poor
Average Delay Time 114 min
This flight has an average delay of 114 minutes with a standard deviation of 0 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.

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