Flight profile · Delta Air Lines
DL1550
Atlanta (ATL) to Raleigh–Durham (RDU) · scheduled 2:45 PM – 4:10 PM
How DL1550 performs
420 operations, 2025-04-14 to 2026-06-30.
DL1550 arrived on time 83.4% of the time, against 80.6% for all ATL → RDU flights — this specific departure is 2.7 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 420 operations between 2025-04-14 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1550 | 83.4% | 1.19% | -4 min | 5.1% | 420 |
| Delta Air Lines on ATL → RDU | 82.6% | 0.84% | -5 min | 5.1% | 10,714 |
| All ATL → RDU flights | 80.6% | 0.93% | -5 min | 6.0% | 13,956 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-04-14 to 2026-06-30
Other routes DL1550 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| RDU→ATL Raleigh–Durham to Atlanta | 2025-04-14 – 2026-06-30 | 420 | 82.0% |
| MCI→ATL Kansas City to Atlanta | 2025-12-20 – 2026-01-03 | 15 | — |
| DCA→ATL Washington to Atlanta | 2025-03-09 – 2025-04-13 | 36 | — |
| AUS→ATL Austin to Atlanta | 2025-01-06 – 2025-03-08 | 58 | — |
| ROA→ATL Roanoke to Atlanta | 2024-06-07 – 2024-10-22 | 138 | 88.2% |
| SEA→LAX Seattle to Los Angeles | 2023-07-05 – 2024-06-06 | 123 | 77.2% |
| CLT→MSP Charlotte to Minneapolis | 2024-04-09 – 2024-05-06 | 28 | — |
| MSP→CLT Minneapolis to Charlotte | 2024-03-10 – 2024-04-08 | 30 | — |
| SEA→SLC Seattle to Salt Lake City | 2024-01-08 – 2024-03-08 | 47 | — |
| SLC→MCO Salt Lake City to Orlando | 2024-01-13 – 2024-03-02 | 11 | — |
| MSP→MDW Minneapolis to Chicago | 2023-07-08 – 2023-07-08 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1550 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 420 records of DL1550 operating ATL → RDU, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.