36 active days
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Tracked flight number
DL1221
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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751 mi avg per flight
1 hr 35 min average
Average across flights included in analytics
1 aircraft type
Tracked activity
Aug 20 – Sep 24, 2026 · 36 active days
Flights36
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Observed route footprint
Routes tracked as DL1221
Directional airport pairings in Aug 20 – Sep 24, 2026.
| Route | Flights | Active days | Tail numbers | Tracked distance | Observed | First observed | Last observed |
|---|---|---|---|---|---|---|---|
| 36 | 36 | 0 | 27,038 mi | 56 hr 55 min | Aug 20, 2026, 10:37 AM UTC | Sep 24, 2026, 12:00 PM UTC |
Observed tail number assignments
Tail numbers tracked as DL1221
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| B739 | 2 | 1 | 1,440 mi | Sep 13, 2026, 10:34 AM UTC | Sep 24, 2026, 12:00 PM UTC | |
| B739 | 2 | 1 | 1,445 mi | Aug 26, 2026, 10:39 AM UTC | Sep 17, 2026, 12:19 PM UTC | |
| B739 | 2 | 1 | 1,654 mi | Sep 5, 2026, 11:03 AM UTC | Sep 16, 2026, 12:27 PM UTC | |
| B739 | 2 | 1 | 1,477 mi | Sep 6, 2026, 10:38 AM UTC | Sep 8, 2026, 12:09 PM UTC | |
| B739 | 1 | 1 | 705 mi | Sep 23, 2026, 10:36 AM UTC | Sep 23, 2026, 12:01 PM UTC | |
Observed aircraft types
Aircraft types tracked as DL1221
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 |
|---|---|---|---|---|---|---|---|---|
| B739 | Boeing 737-900 | 36 | 100.0% | 32 | 27,038 mi | 1 | Aug 20, 2026, 10:37 AM UTC | Sep 24, 2026, 12:00 PM UTC |
Observation log
Flight observations
Latest 100 flights for DL1221 within Aug 20 – Sep 24, 2026
| Confidence | Route | Tail number | Aircraft | First observed | Last observed | Observed | Tracked distance |
|---|---|---|---|---|---|---|---|
| High · 100 | B739 | Sep 24, 2026, 10:37 AM UTC | Sep 24, 2026, 12:00 PM UTC | 1 hr 23 min | 709 mi | ||
| High · 100 | B739 | Sep 23, 2026, 10:36 AM UTC | Sep 23, 2026, 12:01 PM UTC | 1 hr 25 min | 705 mi | ||
| High · 100 |