Flight profile · Delta Air Lines
DL456
Boston (BOS) to Atlanta (ATL) · scheduled 8:10 AM – 11:03 AM
How DL456 performs
1,074 operations, 2023-07-01 to 2026-06-30.
DL456 arrived on time 87.6% of the time, against 78.8% for all BOS → ATL flights — this specific departure is 8.8 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 5.3 points better.
Source: US DOT Bureau of Transportation Statistics · 1,074 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL456 | 87.6% | 1.30% | -10 min | 4.5% | 1,074 |
| Delta Air Lines on BOS → ATL | 82.3% | 1.06% | -9 min | 6.4% | 10,882 |
| All BOS → ATL flights | 78.8% | 1.32% | -8 min | 7.8% | 15,002 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does DL456 run worse on particular days?
Tuesday is historically the most reliable day and Sunday the least, a gap of 8.9 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes DL456 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 |
|---|---|---|---|
| SAN→DTW San Diego to Detroit | 2023-10-29 – 2023-10-31 | 3 | — |
| BOS→SAV Boston to Savannah | 2023-10-28 – 2023-10-28 | 1 | — |
| SAV→BOS Savannah to Boston | 2023-10-28 – 2023-10-28 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route DL456 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 1,074 records of DL456 operating BOS → ATL, 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.