(UA) United Airlines 4337 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(ROA) Roanoke-Blacksburg Regional Airport

Roanoke, VA, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)

On-Time

88%

Late

Very Late

Excessive

13%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

102

Standard Deviation

124.5

Min

Max

190

UA 4337 On-Time Performance Details

Overall Rating

2.0 of 5

Average

Percentage On-Time 88%

Average Delay Time 102 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2 shows that this flight has on-time performance characteristics better than 39% of all other flights in the FlightStats database.

On-Time Performance Rating

3.8 of 5

Good

Percentage On-Time 88%

This flight has an on-time performance of 88%. 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

0.2 of 5

Very Poor

Average Delay Time 102 min

This flight has an average delay of 102 minutes with a standard deviation of 124.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 4% of other flights.