Flight number record
DL 2160
Delta Air Lines · Boston to West Palm Beach
- Route
- BOS → PBI
- Departs
- 15:35
- Flights
- 286
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2160, check with Delta Air Lines.
DL 2160 draws a D. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 286 flights, with a median arrival 4 minutes late.
The national on-time rate over the same period is 77.3%, so DL 2160 runs 17 points behind the country as a whole. Across a thousand flights that is about 169 extra late arrivals.
Key figures
On time
60.4%
Arrivals under 15 minutes late, of 278 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
2.45%
National rate is 1.89%
1 hour+ late
15.8%
National rate is 8.3%
These figures cover 286 flights between September 2025 and August 2026. Beyond the headline rate, 15.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 2160 flies
DL 2160 flies BOS to PBI without a single fixed slot. Its most common scheduled departure was 15:35, used on 72 of 286 flights, with 16:13 (31 flights) and 15:45 (31 flights) next.
- Departs 15:3572 flights25.2%
- Departs 16:1331 flights10.8%
- Departs 15:4531 flights10.8%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 15:35 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 2160 runs 12 points worse at 60.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2160 next to BOS to PBI
Every carrier on BOS to PBI combined arrived on time 65.6% of the time across 2,039 flights, so DL 2160 is 5 points behind it. Delta flew 527 flights on the same city pair under all its flight numbers, including this one, and those ran 69.0% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 21 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2160thin sample | 286 | 60.4% | 75 min | 2.45% | D |
| All Delta Air Lines on BOS–PBI | 527 | 69.0% | 78 min | 2.85% | C |
| All carriers on BOS–PBI | 2,039 | 65.6% | 72 min | 3.48% | C− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2160 quarter by quarter
DL 2160 did not run the same all year. Its best quarter was Apr–Jun 2026 at 78.0% on time and its weakest Oct–Dec 2025 at 48.3%, a swing of 30 points on roughly 72 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights53.3%
- Oct–Dec 202588 flights48.3%
- Jan–Mar 202671 flights55.4%
- Apr–Jun 202691 flights78.0%
- Jul–Sep 20266 flights—
Scale runs 40% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2160 ranged from 56.8% on Friday to 65.7% on Tuesday. With about 41 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 2160 runs when it is late
The 110 late arrivals split 32 under half an hour, 34 between 30 and 60 minutes, and 44 an hour or more.
- 15+ min early60 flights21.6%
- Within 15 min108 flights38.8%
- 15–29 min late32 flights11.5%
- 30–59 min late34 flights12.2%
- 1–2 hours late22 flights7.9%
- 2+ hours late22 flights7.9%
Scale runs 0% to 100%.
Share of 278 completed flights by arrival against schedule.
11 of 91 late departures made up the time and arrived on time, 12% of them. In the other direction, 30 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PBI.
The worst days
Worst days for DL 2160
The latest arrival of the period was on 6 September 2025, 5 hours 11 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across September, July, November, May and December, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 September 2025 | 5 hours 11 minutes | National Airspace System |
| 3 July 2026 | 5 hours 3 minutes | Carrier |
| 25 November 2025 | 4 hours 28 minutes | Carrier |
| 19 May 2026 | 4 hours 24 minutes | National Airspace System |
| 23 December 2025 | 4 hours 16 minutes | Late-arriving aircraft |
Delay causes
Why DL 2160 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 8,205 reported delay minutes.
- 38%Late-arriving aircraft
- 31%Carrier
- 30%National Airspace System
- 1%Security
- 0%Extreme weather
38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,205 reported delay minutes here, that single category outweighs weather by 38 to one. The split is drawn from 8,205 delay minutes reported on DL 2160.
Cancellations sit at 2.45% against a national 1.89%, which is ordinary. Diversions add another 0.35%.
Connections and routes
What a delay on this flight costs
15.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 1,197 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on three other city pairs in the data, including PBI to BOS (119), LGB to SLC (29) and ATL to DTW (26), but none flew often enough under DL 2160 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to PBI only.
One caution: this is a thin sample. 286 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking DL 2160
For a booking, DL 2160 is a flight to put a long connection behind. 15.8% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- BOS to PBI, every carrier and departure
- PBI to BOS, the return direction
- JetBlue Airways 2321 on the same route67.2%
- Boston Logan International (BOS) delay statistics
- Palm Beach International (PBI) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.