6 active days
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Tracked flight number
K4221
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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3,742 mi avg per flight
6 hr 48 min average
Average across flights included in analytics
1 aircraft type
Tracked activity
Aug 21 – Sep 24, 2026 · 6 active days
Flights7
Aug 21
Aug 22
Aug 24
Aug 25
Aug 29
Sep 8
Observed route footprint
Routes tracked as K4221
Directional airport pairings in Aug 21 – Sep 24, 2026.
Observed tail number assignments
Tail numbers tracked as K4221
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| B77L | 2 | 2 | 6,784 mi | Aug 29, 2026, 12:02 AM UTC | Aug 29, 2026, 2:48 PM UTC | |
| B77L | 2 | 2 | 6,593 mi | Aug 24, 2026, 11:22 PM UTC | Aug 25, 2026, 1:46 PM UTC | |
| B77L | 2 | 2 | 6,795 mi | Aug 21, 2026, 11:48 PM UTC | Aug 22, 2026, 3:45 PM UTC | |
| B77L | 1 | 1 | 6,021 mi | Sep 8, 2026, 2:42 AM UTC | Sep 8, 2026, 1:21 PM UTC |
Observed aircraft types
Aircraft types tracked as K4221
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 |
|---|---|---|---|---|---|---|---|---|
| B77L | Boeing 777-200LR | 7 | 100.0% | 4 | 26,193 mi | 2 | Aug 21, 2026, 11:48 PM UTC | Sep 8, 2026, 1:21 PM UTC |
Observation log
Flight observations
Latest 100 flights for K4221 within Aug 21 – Sep 24, 2026
| Confidence | Route | Tail number | Aircraft | First observed | Last observed | Observed | Tracked distance |
|---|---|---|---|---|---|---|---|
| Low · 35 | Route unverified | B77L | Sep 12, 2026, 5:07 AM UTC | Sep 12, 2026, 5:07 AM UTC | 0 min | 0 mi | |
| Low · 35 | Route unverified | B77L | Sep 11, 2026, 11:59 PM UTC | Sep 12, 2026, 12:46 AM UTC | 47 min | 471 mi | |
| Limited · 84 | Route unverified |