Flight profile · Delta Air Lines
DL1245
Boston (BOS) to West Palm Beach (PBI) · scheduled 7:05 AM – 11:20 AM
How DL1245 performs
720 operations, 2023-07-01 to 2026-06-06.
DL1245 arrived on time 82.7% of the time, against 68.2% for all BOS → PBI flights — this specific departure is 14.5 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 8.1 points better.
Source: US DOT Bureau of Transportation Statistics · 720 operations between 2023-07-01 to 2026-06-06
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1245 | 82.7% | 2.08% | -11 min | 5.7% | 720 |
| Delta Air Lines on BOS → PBI | 74.6% | 1.48% | -6 min | 9.6% | 1,692 |
| All BOS → PBI flights | 68.2% | 1.78% | -1 min | 13.2% | 6,225 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-06
Other routes DL1245 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 |
|---|---|---|---|
| PBI→BOS West Palm Beach to Boston | 2023-07-01 – 2026-04-11 | 395 | 81.8% |
| DTW→PHX Detroit to Phoenix | 2025-09-11 – 2025-12-19 | 100 | 72.0% |
| DTW→JFK Detroit to New York | 2025-08-16 – 2025-08-30 | 3 | — |
| IAH→DTW Houston to Detroit | 2024-10-07 – 2024-11-10 | 35 | — |
| ATL→DAL Atlanta to Dallas | 2024-05-07 – 2024-06-06 | 31 | — |
| DAL→ATL Dallas to Atlanta | 2024-05-07 – 2024-06-06 | 31 | — |
| ORD→ATL Chicago to Atlanta | 2024-04-09 – 2024-05-06 | 28 | — |
| ATL→TYS Atlanta to Knoxville/Maryville | 2023-10-14 – 2023-11-04 | 3 | — |
| TYS→ATL Knoxville/Maryville to Atlanta | 2023-11-04 – 2023-11-04 | 1 | — |
| SAT→SLC San Antonio to Salt Lake City | 2023-10-09 – 2023-10-27 | 17 | — |
| DFW→BOS Dallas–Fort Worth to Boston | 2023-09-05 – 2023-10-08 | 34 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1245 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
29 min late
against a median of 11 min early
Percentiles over 720 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why DL1245 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for DL1245 on BOS → PBI. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on BOS → PBI
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| B6321 | JetBlue | 66.9% | 1 min late | 678 |
| DL2160 | Delta Air Lines | 63.4% | 2 min late | 720 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 720 records of DL1245 operating BOS → PBI, 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.
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