29 active days
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Tracked flight number
UA2139
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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964 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 · 29 active days
Flights31
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Observed route footprint
Routes tracked as UA2139
Directional airport pairings in Aug 20 – Sep 24, 2026.
Observed tail number assignments
Tail numbers tracked as UA2139
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| A21N | 2 | 1 | 1,827 mi | Aug 22, 2026, 2:41 PM UTC | Sep 3, 2026, 4:04 PM UTC | |
| B39M | 1 | 1 | 980 mi | Sep 24, 2026, 12:09 AM UTC | Sep 24, 2026, 2:05 AM UTC | |
| B39M | 1 | 1 | 982 mi | Sep 23, 2026, 12:10 AM UTC | Sep 23, 2026, 2:12 AM UTC | |
| B39M | 1 | 1 | 974 mi | Sep 21, 2026, 11:52 PM UTC | Sep 22, 2026, 2:01 AM UTC | |
| B39M | 1 | 1 | 976 mi | Sep 21, 2026, 1:26 AM UTC | Sep 21, 2026, 3:30 AM UTC | |
Observed aircraft types
Aircraft types tracked as UA2139
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 | 19 | 61.3% | 18 | 17,999 mi | 1 | Aug 20, 2026, 2:01 PM UTC | Sep 7, 2026, 4:06 PM UTC |
| B39M | Boeing 737 MAX 9 | 11 | 35.5% | 11 | 10,853 mi | 1 | Sep 8, 2026, 11:50 PM UTC | Sep 24, 2026, 2:05 AM UTC |
| B38M | Boeing 737 MAX 8 | 1 | 3.2% | 1 | 1,047 mi | 1 | Sep 16, 2026, 12:42 AM UTC | Sep 16, 2026, 2:55 AM UTC |
Observation log
Flight observations
Latest 100 flights for UA2139 within Aug 20 – Sep 24, 2026