UAL439 is operated by UNITED AIRLINES INC between Austin Bergstrom International Airport (KAUS) and Denver International Airport (KDEN). The flight is most often flown by a AIRBUS Airbus A319. Typical block time is 2h 0m. SkyMeter has observed 95 legs of this flight number via ADS-B.

✈
FLIGHTS
95
last 90 days
⏱
AVG DURATION
2h 0m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/21/2026
first → last seen
🗺
ROUTES / TYPES
8 / 5
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KAUS → KDEN
62
avg 2h 22m · Austin Bergstrom → Denver
KEWR → KRDU
3
avg 1h 20m · Newark Liberty → Raleigh Durham
KSEA → KLAX
1
avg 2h 24m · Seattle Tacoma → Los Angeles
KSFO → KATL
1
avg 4h 33m · San Francisco → Hartsfield Jackson Atlanta

Aircraft types

Equipment used on this number

5
A319 AIRBUS Airbus A319
139
A320 AIRBUS Airbus A320
17
B38M BOEING Boeing 737 MAX 8
11
B39M BOEING Boeing 737 MAX 9
2
B738 BOEING Boeing 737-800
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL439

30
N443UAAIRBUS Airbus A320
→
08/21/2026
2h 2m
No alerts
Replay Analysis
N458UAAIRBUS Airbus A320
→
08/18/2026
1h 17m
No alerts
Replay Analysis
N458UAAIRBUS Airbus A320
→
08/17/2026
49m
No alerts
Replay Analysis
N458UAAIRBUS Airbus A320
→
08/17/2026
2h 7m
No alerts
Replay Analysis
N87507BOEING Boeing 737-800
→
08/17/2026
2h 24m
No alerts
Replay Analysis
N481UAAIRBUS Airbus A320
→
08/15/2026
2h 41m
No alerts
Replay Analysis
N430UAAIRBUS Airbus A320
→
08/14/2026
2h 28m
No alerts
Replay Analysis
N846UAAIRBUS Airbus A319
→
08/10/2026
2h 5m
No alerts
Replay Analysis
N846UAAIRBUS Airbus A319
→
08/09/2026
2h 42m
No alerts
Replay Analysis
N846UAAIRBUS Airbus A319
→
08/09/2026
36m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
08/09/2026
1h 15m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
08/08/2026
2h 56m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
08/08/2026
4h 12m
No alerts
Replay Analysis
N896UAAIRBUS Airbus A319
→
08/08/2026
2h 5m
No alerts
Replay Analysis
N881UAAIRBUS Airbus A319
→
08/07/2026
1h 50m
No alerts
Replay Analysis
N881UAAIRBUS Airbus A319
→
08/06/2026
27m
No alerts
Replay Analysis
N881UAAIRBUS Airbus A319
→
08/06/2026
2h 18m
No alerts
Replay Analysis
N803UAAIRBUS Airbus A319
→
08/06/2026
1h 43m
No alerts
Replay Analysis
N803UAAIRBUS Airbus A319
→
08/05/2026
2h 9m
No alerts
Replay Analysis
N803UAAIRBUS Airbus A319
→
08/05/2026
26m
No alerts
Replay Analysis
N819UAAIRBUS Airbus A319
→
08/04/2026
2h 1m
No alerts
Replay Analysis
N819UAAIRBUS Airbus A319
→
08/03/2026
39m
No alerts
Replay Analysis
N819UAAIRBUS Airbus A319
→
08/03/2026
2h 41m
No alerts
Replay Analysis
N891UAAIRBUS Airbus A319
→
08/03/2026
2h 8m
No alerts
Replay Analysis
N47369BOEING Boeing 737 MAX 8
→
08/01/2026
28m
No alerts
Replay Analysis
N830UAAIRBUS Airbus A319
→
08/01/2026
1h 44m
No alerts
Replay Analysis
N830UAAIRBUS Airbus A319
→
07/31/2026
2h 23m
No alerts
Replay Analysis
N830UAAIRBUS Airbus A319
→
07/31/2026
38m
No alerts
Replay Analysis
N821UAAIRBUS Airbus A319
→
07/31/2026
1h 46m
No alerts
Replay Analysis
N821UAAIRBUS Airbus A319
→
07/30/2026
2h 26m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window