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(UA) United Airlines 4391 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(SGF) Springfield-Branson National Airport

Springfield, MO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
34
57%
Late
8
13%
Very Late
2
3%
Excessive
12
20%
Cancelled
3
5%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
27
Codeshares
59
Average Delay (min.)
55.2962962962963
Standard Deviation
69.1
Min
0
Max
329

UA 4391 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 58%
Average Delay Time 55.2962962962963 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.1 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 58%
This flight has an on-time performance of 58%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 55.2962962962963 min
This flight has an average delay of 55.2962962962963 minutes with a standard deviation of 69.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.

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