
(UA) United Airlines 4421 On-Time Performance Rating
Date Range:
01-Sep-2026 to 31-Oct-2026
On-Time Performance Chart
(using rounded numbers)
On-Time
1
100%
Late
0
0%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%
Delay Statistics
(Aggregate Arrival Delay Statistics for this Flight)
Total Flights Observed
1
Total Delays ( > 1 min )
0
Codeshares
1
Average Delay (min.)
0
Standard Deviation
0
Min
0
Max
0
UA 4421 On-Time Performance Details
Other Stops for UA 4421
Origin
Destination
Rating
(IAD) Washington Dulles International Airport
Dulles, VA, US
(ROA) Roanoke-Blacksburg Regional Airport
Roanoke, VA, US
0.5 Very Poor
(ORD) Chicago O'Hare International Airport
Chicago, IL, US
(COU) Columbia Regional Airport
Columbia, MO, US
0.7 Poor
(SGF) Springfield-Branson National Airport
Springfield, MO, US
(ORD) Chicago O'Hare International Airport
Chicago, IL, US
4.3 Good
(TUL) Tulsa International Airport
Tulsa, OK, US
(ORD) Chicago O'Hare International Airport
Chicago, IL, US
0.5 Very Poor