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(UA) United Airlines 4637 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(COS) Colorado Springs Airport

Colorado Springs, CO, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
80%
Late
2
6%
Very Late
3
9%
Excessive
2
6%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
35
Total Delays ( > 1 min )
10
Codeshares
35
Average Delay (min.)
47.9
Standard Deviation
75
Min
0
Max
256

UA 4637 On-Time Performance Details

Overall Rating
2.5 of 5
Average
Percentage On-Time 80%
Average Delay Time 47.9 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.5 shows that this flight has on-time performance characteristics better than 49% of all other flights in the FlightStats database.
On-Time Performance Rating
3.8 of 5
Good
Percentage On-Time 80%
This flight has an on-time performance of 80%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 76% of other flights.
Delay Performance
1.2 of 5
Poor
Average Delay Time 47.9 min
This flight has an average delay of 47.9 minutes with a standard deviation of 75 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 24% of other flights.

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