36 active days
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Tracked flight number
DL1251
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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1,607 mi avg per flight
3 hr 14 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 DL1251
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 | 57,847 mi | 116 hr 19 min | Aug 20, 2026, 1:08 AM UTC | Sep 24, 2026, 4:05 AM UTC |
Observed tail number assignments
Tail numbers tracked as DL1251
Open a tail number for its complete tracked profile.
| Tail number | Type | Flights | Routes | Tracked distance | First observed | Last observed |
|---|---|---|---|---|---|---|
| B739 | 2 | 1 | 3,252 mi | Aug 23, 2026, 12:01 AM UTC | Sep 21, 2026, 4:28 AM UTC | |
| B739 | 2 | 1 | 3,228 mi | Sep 9, 2026, 12:50 AM UTC | Sep 15, 2026, 5:21 AM UTC | |
| B739 | 1 | 1 | 1,609 mi | Sep 24, 2026, 12:45 AM UTC | Sep 24, 2026, 4:05 AM UTC | |
| B739 | 1 | 1 | 1,600 mi | Sep 23, 2026, 12:57 AM UTC | Sep 23, 2026, 4:15 AM UTC | |
| B739 | 1 | 1 | 1,676 mi | Sep 22, 2026, 12:51 AM UTC | Sep 22, 2026, 4:24 AM UTC | |
Observed aircraft types
Aircraft types tracked as DL1251
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% | 34 | 57,847 mi | 1 | Aug 20, 2026, 1:08 AM UTC | Sep 24, 2026, 4:05 AM UTC |
Observation log
Flight observations
Latest 100 flights for DL1251 within Aug 20 – Sep 24, 2026
| Confidence | Route | Tail number | Aircraft | First observed | Last observed | Observed | Tracked distance |
|---|---|---|---|---|---|---|---|
| High · 100 | B739 | Sep 24, 2026, 12:45 AM UTC | Sep 24, 2026, 4:05 AM UTC | 3 hr 20 min | 1,609 mi | ||
| High · 100 | B739 | Sep 23, 2026, 12:57 AM UTC | Sep 23, 2026, 4:15 AM UTC | 3 hr 18 min | 1,600 mi | ||
| High · 100 |