4 active days
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Tracked flight number
UA3939
Analysis window
Aug 21 – 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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942 mi avg per flight
1 hr 51 min average
Average across flights included in analytics
4 aircraft types
Tracked activity
Aug 21 – Sep 24, 2026 · 4 active days
Flights4
Aug 21
Sep 17
Sep 21
Sep 24
Observed route footprint
Routes tracked as UA3939
Directional airport pairings in Aug 21 – Sep 24, 2026.
| Route | Flights | Active days | Tail numbers | Tracked distance | Observed | First observed | Last observed |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 0 | 817 mi | 1 hr 48 min | Sep 24, 2026, 3:40 AM UTC | Sep 24, 2026, 5:28 AM UTC | |
| 1 | 1 | 0 | 389 mi | 49 min | Sep 21, 2026, 10:47 PM UTC | Sep 21, 2026, 11:36 PM UTC | |
| 1 | 1 | 0 | 165 mi | 22 min | Sep 17, 2026, 11:55 PM UTC | Sep 18, 2026, 12:17 AM UTC | |
| 1 | 1 | 0 | 2,397 mi | 4 hr 24 min | Aug 21, 2026, 4:15 AM UTC | Aug 21, 2026, 8:39 AM UTC |
Observed tail number assignments
Tail numbers tracked as UA3939
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| A21N | 1 | 1 | 817 mi | Sep 24, 2026, 3:40 AM UTC | Sep 24, 2026, 5:28 AM UTC | |
| A319 | 1 | 1 | 389 mi | Sep 21, 2026, 10:47 PM UTC | Sep 21, 2026, 11:36 PM UTC | |
| B739 | 1 | 1 | 165 mi | Sep 17, 2026, 11:55 PM UTC | Sep 18, 2026, 12:17 AM UTC | |
| B39M | 1 | 1 | 2,397 mi | Aug 21, 2026, 4:15 AM UTC | Aug 21, 2026, 8:39 AM UTC |
Observed aircraft types
Aircraft types tracked as UA3939
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 |
|---|---|---|---|---|---|---|---|---|
| A21N | Airbus A321neo | 1 | 25.0% | 1 | 817 mi | 1 | Sep 24, 2026, 3:40 AM UTC | Sep 24, 2026, 5:28 AM UTC |
| A319 | Airbus A319 | 1 | 25.0% | 1 | 389 mi | 1 | Sep 21, 2026, 10:47 PM UTC | Sep 21, 2026, 11:36 PM UTC |
| B739 | Boeing 737-900 | 1 | 25.0% | 1 | 165 mi | 1 | Sep 17, 2026, 11:55 PM UTC | Sep 18, 2026, 12:17 AM UTC |
| B39M | Boeing 737 MAX 9 | 1 | 25.0% | 1 | 2,397 mi | 1 | Aug 21, 2026, 4:15 AM UTC | Aug 21, 2026, 8:39 AM UTC |
Observation log
Flight observations
Latest 100 flights for UA3939 within Aug 21 – Sep 24, 2026
| Confidence | Route | Tail number | Aircraft | First observed | Last observed | Observed | Tracked distance |
|---|---|---|---|---|---|---|---|
| High · 100 | A21N | Sep 24, 2026, 3:40 AM UTC | Sep 24, 2026, 5:28 AM UTC | 1 hr 48 min | 817 mi | ||
| High · 100 | A319 | Sep 21, 2026, 10:47 PM UTC | Sep 21, 2026, 11:36 PM UTC | 49 min | 389 mi | ||
| Limited · 84 | Route unverified |