(UA) United Airlines 4638 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(AVP) Wilkes-Barre Scranton International Airport

Wilkes-Barre, PA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

70%

Late

15%

Very Late

Excessive

10%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

57.07692307692308

Standard Deviation

113.4

Min

Max

355

UA 4638 On-Time Performance Details

Overall Rating

0.8 of 5

Poor

Percentage On-Time 70%

Average Delay Time 57.07692307692308 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 14% of all other flights in the FlightStats database.

On-Time Performance Rating

1.2 of 5

Poor

Percentage On-Time 70%

This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.

Delay Performance

0.3 of 5

Very Poor

Average Delay Time 57.07692307692308 min

This flight has an average delay of 57.07692307692308 minutes with a standard deviation of 113.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 7% of other flights.