33 active days
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Tracked flight number
UA404
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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809 mi avg per flight
1 hr 43 min average
Average across flights included in analytics
4 aircraft types
Tracked activity
Aug 20 – Sep 24, 2026 · 33 active days
Flights58
Aug 20
Aug 21
Aug 22
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Aug 31
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Sep 23
Observed route footprint
Routes tracked as UA404
Directional airport pairings in Aug 20 – Sep 24, 2026.
| Route | Flights | Active days | Tail numbers | Tracked distance | Observed | First observed | Last observed |
|---|---|---|---|---|---|---|---|
| 31 | 31 | 0 | 7,078 mi | 20 hr 20 min | Aug 20, 2026, 9:22 PM UTC | Sep 23, 2026, 9:48 PM UTC | |
| 26 | 24 | 0 | 39,453 mi | 78 hr 18 min | Aug 21, 2026, 1:25 AM UTC | Sep 24, 2026, 2:18 AM UTC | |
| 1 | 1 | 0 | 395 mi | 51 min | Aug 22, 2026, 12:08 AM UTC | Aug 22, 2026, 12:59 AM UTC |
Observed tail number assignments
Tail numbers tracked as UA404
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| B737 | 3 | 2 | 824 mi | Aug 21, 2026, 9:18 PM UTC | Sep 5, 2026, 9:50 PM UTC | |
| B737 | 2 | 1 | 432 mi | Aug 22, 2026, 9:23 PM UTC | Sep 22, 2026, 9:49 PM UTC | |
| B737 | 2 | 1 | 444 mi | Aug 29, 2026, 9:18 PM UTC | Sep 20, 2026, 9:50 PM UTC | |
| B737 | 2 | 1 | 443 mi | Sep 12, 2026, 9:17 PM UTC | Sep 19, 2026, 10:13 PM UTC | |
| B737 | 2 | 1 | 408 mi | Aug 31, 2026, 9:19 PM UTC | Sep 18, 2026, 9:58 PM UTC | |
Observed aircraft types
Aircraft types tracked as UA404
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 |
|---|---|---|---|---|---|---|---|---|
| B737 | Boeing 737-700 | 32 | 55.2% | 24 | 7,473 mi | 2 | Aug 20, 2026, 9:22 PM UTC | Sep 23, 2026, 9:48 PM UTC |
| B39M | Boeing 737 MAX 9 | 22 | 37.9% | 22 | 32,981 mi | 1 | Aug 21, 2026, 1:25 AM UTC | Sep 24, 2026, 2:18 AM UTC |
| B739 | Boeing 737-900 | 3 | 5.2% | 3 | 4,931 mi | 1 | Sep 2, 2026, 12:21 AM UTC | Sep 6, 2026, 2:10 AM UTC |
| B38M | Boeing 737 MAX 8 | 1 | 1.7% | 1 | 1,541 mi | 1 | Sep 22, 2026, 11:22 PM UTC | Sep 23, 2026, 2:25 AM UTC |
Observation log
Flight observations
Latest 100 flights for UA404 within Aug 20 – Sep 24, 2026