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(UA) United Airlines 4437 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
23
62%
Late
2
5%
Very Late
2
5%
Excessive
9
24%
Cancelled
1
3%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
16
Codeshares
37
Average Delay (min.)
114.4375
Standard Deviation
121.6
Min
0
Max
446

UA 4437 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 62%
Average Delay Time 114.4375 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 1% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 62%
This flight has an on-time performance of 62%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 4% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 114.4375 min
This flight has an average delay of 114.4375 minutes with a standard deviation of 121.6 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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