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(UA) United Airlines 4387 On-Time Performance Rating

Date Range:

15-Oct-2025 to 15-Dec-2025

(FSD) Sioux Falls Regional Airport

Sioux Falls, SD, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
29
76%
Late
0
0%
Very Late
1
3%
Excessive
7
18%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
10
Codeshares
37
Average Delay (min.)
97.3
Standard Deviation
77.7
Min
0
Max
242

UA 4387 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 78%
Average Delay Time 97.3 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.
On-Time Performance Rating
3.3 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 66% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 97.3 min
This flight has an average delay of 97.3 minutes with a standard deviation of 77.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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