4 active days
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Tracked flight number
UA3900
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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2,490 mi avg per flight
5 hr 10 min average
Average across flights included in analytics
4 aircraft types
Tracked activity
Aug 20 – Sep 24, 2026 · 4 active days
Flights4
Aug 20
Sep 1
Sep 9
Sep 14
Observed route footprint
Routes tracked as UA3900
Directional airport pairings in Aug 20 – Sep 24, 2026.
| Route | Flights | Active days | Tail numbers | Tracked distance | Observed | First observed | Last observed |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 0 | 3,274 mi | 7 hr 11 min | Sep 14, 2026, 3:01 PM UTC | Sep 14, 2026, 10:12 PM UTC | |
| 1 | 1 | 0 | 3,672 mi | 7 hr 32 min | Sep 9, 2026, 2:41 PM UTC | Sep 9, 2026, 10:13 PM UTC | |
| 1 | 1 | 0 | 1,646 mi | 3 hr 15 min | Sep 1, 2026, 3:47 PM UTC | Sep 1, 2026, 7:02 PM UTC | |
| 1 | 1 | 0 | 1,368 mi | 2 hr 44 min | Aug 20, 2026, 2:01 PM UTC | Aug 20, 2026, 4:45 PM UTC |
Observed tail number assignments
Tail numbers tracked as UA3900
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| B752 | 1 | 1 | 3,274 mi | Sep 14, 2026, 3:01 PM UTC | Sep 14, 2026, 10:12 PM UTC | |
| B763 | 1 | 1 | 3,672 mi | Sep 9, 2026, 2:41 PM UTC | Sep 9, 2026, 10:13 PM UTC | |
| B772 | 1 | 1 | 1,646 mi | Sep 1, 2026, 3:47 PM UTC | Sep 1, 2026, 7:02 PM UTC | |
| B738 | 1 | 1 | 1,368 mi | Aug 20, 2026, 2:01 PM UTC | Aug 20, 2026, 4:45 PM UTC |
Observed aircraft types
Aircraft types tracked as UA3900
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 |
|---|---|---|---|---|---|---|---|---|
| B752 | Boeing 757-200 | 1 | 25.0% | 1 | 3,274 mi | 1 | Sep 14, 2026, 3:01 PM UTC | Sep 14, 2026, 10:12 PM UTC |
| B763 | Boeing 767-300 | 1 | 25.0% | 1 | 3,672 mi | 1 | Sep 9, 2026, 2:41 PM UTC | Sep 9, 2026, 10:13 PM UTC |
| B772 | Boeing 777-200 | 1 | 25.0% | 1 | 1,646 mi | 1 | Sep 1, 2026, 3:47 PM UTC | Sep 1, 2026, 7:02 PM UTC |
| B738 | Boeing 737-800 | 1 | 25.0% | 1 | 1,368 mi | 1 | Aug 20, 2026, 2:01 PM UTC | Aug 20, 2026, 4:45 PM UTC |
Observation log
Flight observations
Latest 100 flights for UA3900 within Aug 20 – Sep 24, 2026
| Confidence | Route | Tail number | Aircraft | First observed | Last observed | Observed | Tracked distance |
|---|---|---|---|---|---|---|---|
| Limited · 84 | Route unverified | B737 | Sep 20, 2026, 11:01 AM UTC | Sep 20, 2026, 11:55 AM UTC | 54 min | 460 mi | |
| Limited · 84 | Route unverified | B789 | Sep 19, 2026, 9:57 PM UTC | Sep 19, 2026, 10:22 PM UTC | 25 min | 196 mi | |
| Limited · 84 | Route unverified | B789 |