35 active days
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Tracked flight number
UA1231
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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998 mi avg per flight
2 hr 6 min average
Average across flights included in analytics
3 aircraft types
Tracked activity
Aug 20 – Sep 24, 2026 · 35 active days
Flights35
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Observed route footprint
Routes tracked as UA1231
Directional airport pairings in Aug 20 – Sep 24, 2026.
| Route | Flights | Active days | Tail numbers | Tracked distance | Observed | First observed | Last observed |
|---|---|---|---|---|---|---|---|
| 35 | 35 | 0 | 34,915 mi | 73 hr 15 min | Aug 20, 2026, 12:44 PM UTC | Sep 23, 2026, 3:03 PM UTC |
Observed tail number assignments
Tail numbers tracked as UA1231
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| A21N | 3 | 1 | 2,933 mi | Sep 8, 2026, 1:04 PM UTC | Sep 10, 2026, 2:59 PM UTC | |
| A21N | 2 | 1 | 2,257 mi | Sep 17, 2026, 1:19 PM UTC | Sep 19, 2026, 3:57 PM UTC | |
| A21N | 2 | 1 | 1,818 mi | Sep 13, 2026, 12:41 PM UTC | Sep 14, 2026, 3:02 PM UTC | |
| A21N | 1 | 1 | 986 mi | Sep 23, 2026, 1:01 PM UTC | Sep 23, 2026, 3:03 PM UTC | |
| A21N | 1 | 1 | 1,055 mi | Sep 22, 2026, 12:48 PM UTC | Sep 22, 2026, 3:01 PM UTC | |
Observed aircraft types
Aircraft types tracked as UA1231
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 |
|---|---|---|---|---|---|---|---|---|
| B739 | Boeing 737-900 | 15 | 42.9% | 15 | 14,872 mi | 1 | Aug 20, 2026, 12:44 PM UTC | Sep 12, 2026, 2:46 PM UTC |
| A21N | Airbus A321neo | 14 | 40.0% | 10 | 14,029 mi | 1 | Sep 8, 2026, 1:04 PM UTC | Sep 23, 2026, 3:03 PM UTC |
| B39M | Boeing 737 MAX 9 | 6 | 17.1% | 6 | 6,015 mi | 1 | Aug 22, 2026, 12:54 PM UTC | Sep 11, 2026, 3:26 PM UTC |
Observation log
Flight observations
Latest 100 flights for UA1231 within Aug 20 – Sep 24, 2026