(UA) United Airlines 439 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(FCA) Glacier Park International Airport

Kalispell, MT, US

(EWR) Newark Liberty International Airport

Newark, NJ, US

On-Time Performance Chart

(using rounded numbers)

On-Time

67%

Late

Very Late

33%

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

Standard Deviation

18.4

Min

Max

UA 439 On-Time Performance Details

Overall Rating

2.4 of 5

Average

Percentage On-Time 67%

Average Delay Time 23 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 47% of all other flights in the FlightStats database.

On-Time Performance Rating

1.7 of 5

Average

Percentage On-Time 67%

This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 34% of other flights.

Delay Performance

3.1 of 5

Average

Average Delay Time 23 min

This flight has an average delay of 23 minutes with a standard deviation of 18.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 62% of other flights.