(UA) United Airlines 4388 On-Time Performance Rating

Date Range:

15-Jun-2025 to 15-Aug-2025

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

Late

Very Late

Excessive

100%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

158

Standard Deviation

Min

158

Max

158

UA 4388 On-Time Performance Details

Overall Rating

0.2 of 5

Very Poor

Percentage On-Time 0%

Average Delay Time 158 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.2 shows that this flight has on-time performance characteristics better than 3% of all other flights in the FlightStats database.

On-Time Performance Rating

0.3 of 5

Very Poor

Percentage On-Time 0%

This flight has an on-time performance of 0%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 5% of other flights.

Delay Performance

0.1 of 5

Very Poor

Average Delay Time 158 min

This flight has an average delay of 158 minutes with a standard deviation of 0 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.