Is UA439 delayed?
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
4 min late
Official source · Updated
Departure
Los Angeles
LAX
Actual
Scheduled 17:01
Sep 8
Arrival
Phoenix
PHX
Actual
Scheduled 18:07
Sep 8
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 11 min early
AUS → DEN
- 1 min early
AUS → DEN
- 5 min early
LAX → PHX
- 10 min late
LAX → PHX
- 4 min late
LAX → PHX
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 7
- Arrivals over 15 minutes late
- 0
- Observed cancellations
- 1
- Observed occurrences
- 8
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 17, 2026Arrived | Austin | Denver | -11 | |
| Sep 16, 2026Arrived | Austin | Denver | -1 | |
| Sep 15, 2026Arrived | Los Angeles | Phoenix | -5 | |
| Sep 14, 2026Cancelled | Austin | Denver | Not available | Not available |
| Sep 12, 2026Arrived | Los Angeles | Phoenix | 10 | |
| Sep 8, 2026Arrived | Los Angeles | Phoenix | 4 | |
| Sep 7, 2026Arrived | Austin | Denver | 8 | |
| Sep 4, 2026Arrived | Austin | Denver | -10 |