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(UA) United Airlines 4438 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(GRR) Grand Rapids Gerald R. Ford International Airport

Grand Rapids, MI, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
75%
Late
1
8%
Very Late
0
0%
Excessive
2
17%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
12
Total Delays ( > 1 min )
3
Codeshares
12
Average Delay (min.)
75
Standard Deviation
65
Min
0
Max
144

UA 4438 On-Time Performance Details

Overall Rating
1.5 of 5
Poor
Percentage On-Time 75%
Average Delay Time 75 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.5 shows that this flight has on-time performance characteristics better than 29% of all other flights in the FlightStats database.
On-Time Performance Rating
2.5 of 5
Average
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 50% of other flights.
Delay Performance
0.5 of 5
Very Poor
Average Delay Time 75 min
This flight has an average delay of 75 minutes with a standard deviation of 65 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 10% of other flights.

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