34 active days
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Tracked flight number
UA1399
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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1,130 mi avg per flight
2 hr 29 min average
Average across flights included in analytics
4 aircraft types
Tracked activity
Aug 20 – Sep 24, 2026 · 34 active days
Flights46
Aug 20
Aug 21
Aug 22
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Aug 24
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Aug 31
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Sep 24
Observed route footprint
Routes tracked as UA1399
Directional airport pairings in Aug 20 – Sep 24, 2026.
| Route | Flights | Active days | Tail numbers | Tracked distance | Observed | First observed | Last observed |
|---|---|---|---|---|---|---|---|
| 34 | 34 | 0 | 38,406 mi | 85 hr 22 min | Aug 20, 2026, 2:30 AM UTC | Sep 24, 2026, 5:02 AM UTC | |
| 11 | 11 | 0 | 12,391 mi | 26 hr 18 min | Sep 8, 2026, 10:06 PM UTC | Sep 22, 2026, 11:37 PM UTC | |
| 1 | 1 | 0 | 1,184 mi | 2 hr 22 min | Sep 23, 2026, 9:27 PM UTC | Sep 23, 2026, 11:50 PM UTC |
Observed tail number assignments
Tail numbers tracked as UA1399
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| B39M | 2 | 1 | 2,315 mi | Sep 20, 2026, 1:57 AM UTC | Sep 23, 2026, 4:29 AM UTC | |
| B39M | 2 | 1 | 2,243 mi | Aug 25, 2026, 2:42 AM UTC | Sep 21, 2026, 5:20 AM UTC | |
| B39M | 2 | 1 | 2,300 mi | Sep 16, 2026, 1:53 AM UTC | Sep 17, 2026, 5:13 AM UTC | |
| B39M | 2 | 1 | 2,244 mi | Sep 10, 2026, 2:09 AM UTC | Sep 11, 2026, 5:24 AM UTC | |
| B39M | 2 | 1 | 2,210 mi | Aug 21, 2026, 5:39 AM UTC | Sep 8, 2026, 5:08 AM UTC | |
Observed aircraft types
Aircraft types tracked as UA1399
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 |
|---|---|---|---|---|---|---|---|---|
| B39M | Boeing 737 MAX 9 | 28 | 60.9% | 22 | 31,710 mi | 1 | Aug 20, 2026, 2:30 AM UTC | Sep 23, 2026, 4:29 AM UTC |
| B739 | Boeing 737-900 | 13 | 28.3% | 13 | 14,685 mi | 3 | Sep 8, 2026, 10:06 PM UTC | Sep 23, 2026, 11:50 PM UTC |
| B38M | Boeing 737 MAX 8 | 4 | 8.7% | 4 | 4,469 mi | 1 | Aug 22, 2026, 2:34 AM UTC | Sep 12, 2026, 5:05 AM UTC |
| A319 | Airbus A319 | 1 | 2.2% | 1 | 1,117 mi | 1 | Sep 24, 2026, 2:38 AM UTC | Sep 24, 2026, 5:02 AM UTC |
Observation log
Flight observations
Latest 100 flights for UA1399 within Aug 20 – Sep 24, 2026
| Confidence | Route | Tail number | Aircraft | First observed | Last observed | Observed | Tracked distance |
|---|---|---|---|---|---|---|---|
| High · 100 | A319 | Sep 24, 2026, 2:38 AM UTC | Sep 24, 2026, 5:02 AM UTC | 2 hr 23 min | 1,117 mi | ||
| High · 100 | B739 | Sep 23, 2026, 9:27 PM UTC | Sep 23, 2026, 11:50 PM UTC | 2 hr 22 min | 1,184 mi | ||
| High · 100 |