(UA) United Airlines 1577 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

89%

Late

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

39.25

Standard Deviation

39.2

Min

Max

UA 1577 On-Time Performance Details

Overall Rating

3.5 of 5

Average

Percentage On-Time 91%

Average Delay Time 39.25 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.5 shows that this flight has on-time performance characteristics better than 69% of all other flights in the FlightStats database.

On-Time Performance Rating

4.9 of 5

Very Good

Percentage On-Time 91%

This flight has an on-time performance of 91%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 99% of other flights.

Delay Performance

2.1 of 5

Average

Average Delay Time 39.25 min

This flight has an average delay of 39.25 minutes with a standard deviation of 39.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.