22 active days
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Tracked flight number
UA439
Analysis window
Aug 20 – Sep 24, 2026
Every derived statistic, daily trend, route, tail number assignment, flight observation, and mapped path below uses this flight-date window.
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830 mi avg per flight
1 hr 47 min average
Average across flights included in analytics
3 aircraft types
Tracked activity
Aug 20 – Sep 24, 2026 · 22 active days
Flights24
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Observed route footprint
Routes tracked as UA439
Directional airport pairings in Aug 20 – Sep 24, 2026.
Observed tail number assignments
Tail numbers tracked as UA439
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| B39M | 2 | 1 | 1,943 mi | Sep 20, 2026, 11:20 PM UTC | Sep 22, 2026, 1:32 AM UTC | |
| A320 | 2 | 1 | 1,715 mi | Sep 3, 2026, 11:32 PM UTC | Sep 5, 2026, 1:17 AM UTC | |
| B39M | 1 | 1 | 846 mi | Sep 23, 2026, 11:30 PM UTC | Sep 24, 2026, 1:19 AM UTC | |
| B39M | 1 | 1 | 401 mi | Sep 22, 2026, 11:38 PM UTC | Sep 23, 2026, 12:33 AM UTC | |
| B739 | 1 | 1 | 426 mi | Sep 19, 2026, 11:31 PM UTC | Sep 20, 2026, 12:29 AM UTC | |
Observed aircraft types
Aircraft types tracked as UA439
Observed flights grouped by aircraft designator and matched to the aircraft reference catalog.
| Type | Aircraft name | Flights | Makeup | Tail numbers | Tracked distance | Routes | First observed | Last observed |
|---|---|---|---|---|---|---|---|---|
| A320 | Airbus A320 | 12 | 50.0% | 11 | 10,970 mi | 1 | Aug 21, 2026, 2:25 AM UTC | Sep 5, 2026, 1:17 AM UTC |
| B39M | Boeing 737 MAX 9 | 10 | 41.7% | 9 | 7,961 mi | 2 | Sep 9, 2026, 12:07 AM UTC | Sep 24, 2026, 1:19 AM UTC |
| B739 | Boeing 737-900 | 2 | 8.3% | 2 | 987 mi | 1 | Sep 12, 2026, 11:33 PM UTC | Sep 20, 2026, 12:29 AM UTC |
Observation log
Flight observations
Latest 100 flights for UA439 within Aug 20 – Sep 24, 2026