UA439 · UAL439

UAL439 over the last 30 days

As of 2026-10-29

UAL439 is operated by United Airlines on the route Austin Bergstrom International Airport (AUS/KAUS) → Denver International Airport (DEN/KDEN). It usually takes off around 23:47 UTC (18:47 local time, AUS). It usually lands around 01:28 UTC (19:28 local time, DEN). Most frequent aircraft type: BOEING 737-800 (B738).

Days with an observed flight (last 30 days)

25/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sun

Typical take-off

23:47 UTC · 18:47 local time (AUS)

Typical landing

01:28 UTC · 19:28 local time (DEN)

Typical time airborne

105 min

Median departure deviation from the usual time on this route

+4 min

Departures within 15 minutes of the usual time

79 %

Departures measured

131

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737-800 (B738) — Number of flights: 15
• BOEING 737 MAX 9 (B39M) — Number of flights: 8
• BOEING 737-900 (B739) — Number of flights: 5

Aircraft in the last 7 days

• N17465 · BOEING 737 MAX 9 2026-10-29
• N17459 · BOEING 737 MAX 9 2026-10-28
• N69804 · BOEING 737-900 2026-10-27
• N38443 · BOEING 737-900 2026-10-26
• N63899 · BOEING 737-900 2026-10-25
• N816UA · AIRBUS A-319 2026-10-24

Related flights on this route

• All flights KAUS – KDEN