Flight profile · Delta Air Lines
DL506
Seattle (SEA) to Miami (MIA) · scheduled 8:00 AM – 4:05 PM
How DL506 performs
559 operations, 2024-12-19 to 2026-06-30.
DL506 arrived on time 79.2% of the time, against 78.0% for all SEA → MIA flights — this specific departure is 1.1 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 559 operations between 2024-12-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL506 | 79.2% | 0.89% | -8 min | 4.9% | 559 |
| Delta Air Lines on SEA → MIA | 79.2% | 0.89% | -8 min | 4.9% | 559 |
| All SEA → MIA flights | 78.0% | 0.97% | -7 min | 5.9% | 2,899 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-12-19 to 2026-06-30
Other routes DL506 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 |
|---|---|---|---|
| MIA→SEA Miami to Seattle | 2024-12-19 – 2026-06-06 | 366 | 63.0% |
| LAS→ATL Las Vegas to Atlanta | 2024-10-07 – 2024-12-18 | 72 | — |
| MCO→JFK Orlando to New York | 2024-09-09 – 2024-10-06 | 28 | — |
| SAN→ATL San Diego to Atlanta | 2024-07-08 – 2024-09-08 | 31 | — |
| SAT→DTW San Antonio to Detroit | 2024-06-07 – 2024-07-07 | 21 | — |
| LGA→ATL New York to Atlanta | 2023-07-05 – 2024-06-06 | 162 | 89.9% |
| ATL→LEX Atlanta to Lexington | 2024-05-11 – 2024-06-01 | 5 | — |
| LGA→BOS New York to Boston | 2024-01-08 – 2024-05-19 | 55 | — |
| SFO→DTW San Francisco to Detroit | 2024-04-09 – 2024-05-06 | 28 | — |
| SLC→BOS Salt Lake City to Boston | 2024-03-10 – 2024-04-08 | 30 | — |
| ATL→TYS Atlanta to Knoxville/Maryville | 2023-12-23 – 2023-12-23 | 1 | — |
| TYS→ATL Knoxville/Maryville to Atlanta | 2023-12-23 – 2023-12-23 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route DL506 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 559 records of DL506 operating SEA → MIA, 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.