Flight profile · Delta Air Lines
DL474
Seattle (SEA) to Boston (BOS) · scheduled 3:35 PM – 11:59 PM
How DL474 performs
446 operations, 2024-06-07 to 2026-06-30.
DL474 arrived on time 74.0% of the time, against 75.5% for all SEA → BOS flights — this specific departure is 1.6 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 10.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 446 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL474 | 74.0% | 0.90% | -4 min | 8.4% | 446 |
| Delta Air Lines on SEA → BOS | 84.2% | 0.94% | -9 min | 4.3% | 2,863 |
| All SEA → BOS flights | 75.5% | 0.86% | -4 min | 7.3% | 7,585 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL474 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 |
|---|---|---|---|
| MSP→ORD Minneapolis to Chicago | 2026-06-06 – 2026-06-06 | 1 | — |
| PHX→MSP Phoenix to Minneapolis | 2026-01-05 – 2026-01-05 | 1 | — |
| CID→ATL Cedar Rapids to Atlanta | 2025-12-20 – 2026-01-04 | 16 | — |
| CVG→ATL Cincinnati / Covington to Atlanta | 2025-07-12 – 2025-08-09 | 5 | — |
| MCI→LAX Kansas City to Los Angeles | 2025-01-06 – 2025-03-07 | 35 | — |
| MSP→ANC Minneapolis to Anchorage | 2024-03-10 – 2024-06-06 | 89 | — |
| ANC→MSP Anchorage to Minneapolis | 2024-03-10 – 2024-06-06 | 89 | — |
| LAX→DTW Los Angeles to Detroit | 2024-01-15 – 2024-03-08 | 21 | — |
| ATL→ORD Atlanta to Chicago | 2023-12-24 – 2024-01-07 | 6 | — |
| ORD→ATL Chicago to Atlanta | 2023-12-24 – 2024-01-07 | 6 | — |
| 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 | — |
| DFW→LGA Dallas–Fort Worth to New York | 2023-12-17 – 2023-12-22 | 6 | — |
| ATL→SAV Atlanta to Savannah | 2023-09-10 – 2023-12-15 | 49 | — |
| ATL→SFO Atlanta to San Francisco | 2023-11-05 – 2023-12-06 | 19 | — |
| HPN→ATL White Plains to Atlanta | 2023-10-28 – 2023-11-04 | 8 | — |
| DTW→SEA Detroit to Seattle | 2023-07-01 – 2023-09-04 | 40 | — |
Because the same number has served different journeys, the statistics above describe only the route DL474 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 446 records of DL474 operating SEA → BOS, 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.