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(UA) United Airlines 4421 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(TUL) Tulsa International Airport

Tulsa, OK, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
22
67%
Late
3
9%
Very Late
2
6%
Excessive
4
12%
Cancelled
0
0%
Diverted
2
6%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
31
Total Delays ( > 1 min )
12
Codeshares
31
Average Delay (min.)
59.583333333333336
Standard Deviation
93.4
Min
0
Max
345

UA 4421 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 71%
Average Delay Time 59.583333333333336 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 9% of all other flights in the FlightStats database.
On-Time Performance Rating
0.8 of 5
Poor
Percentage On-Time 71%
This flight has an on-time performance of 71%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 16% of other flights.
Delay Performance
0.2 of 5
Very Poor
Average Delay Time 59.583333333333336 min
This flight has an average delay of 59.583333333333336 minutes with a standard deviation of 93.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 4% of other flights.

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