Flight number record
DL 2428
Delta Air Lines · Miami to New York
- Route
- MIA → JFK
- Departs
- 07:40
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2428, check with Delta Air Lines.
DL 2428 earns an A−. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 255 flights, with a median arrival 5 minutes early.
Set against the rest of the country, DL 2428's record is 11 points better than the US average of 77.3%. That gap is worth roughly 114 fewer late arrivals for every thousand flights.
Key figures
On time
88.7%
Arrivals under 15 minutes late, of 247 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
3.14%
National rate is 1.89%
1 hour+ late
2.8%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 5 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When DL 2428 flies
DL 2428 flies MIA to JFK without a single fixed slot. Its most common scheduled departure was 07:40, used on 110 of 255 flights, with 07:05 (57 flights) and 07:12 (31 flights) next.
- Departs 07:40110 flights43.1%
- Departs 07:0557 flights22.4%
- Departs 07:1231 flights12.2%
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 07:40 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2428 runs level with that at 88.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 2428 next to MIA to JFK
Every carrier on MIA to JFK combined arrived on time 71.6% of the time across 4,526 flights, so DL 2428 is 17 points ahead of it. Delta flew 1,621 flights on the same city pair under all its flight numbers, including this one, and those ran 72.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2428thin sample | 255 | 88.7% | 73 min | 3.14% | A− |
| All Delta Air Lines on MIA–JFK | 1,621 | 72.2% | 75 min | 3.45% | C− |
| All carriers on MIA–JFK | 4,526 | 71.6% | 78 min | 3.09% | C− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2428 quarter by quarter
Quarter by quarter DL 2428 held fairly steady: 85.9% in Jan–Mar 2026, 92.2% in Apr–Jun 2026 and 90.0% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights85.9%
- Apr–Jun 202691 flights92.2%
- Jul–Sep 202662 flights90.0%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2428 ranged from 82.4% on Monday to 94.3% on Tuesday. With about 36 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 2428 runs when it is late
The 28 late arrivals split 13 under half an hour, 8 between 30 and 60 minutes, and 7 an hour or more.
- 15+ min early42 flights17.0%
- Within 15 min177 flights71.7%
- 15–29 min late13 flights5.3%
- 30–59 min late8 flights3.2%
- 1–2 hours late3 flights1.2%
- 2+ hours late4 flights1.6%
Scale runs 0% to 100%.
Share of 247 completed flights by arrival against schedule.
3 of 20 late departures made up the time and arrived on time, 15% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for DL 2428
The latest arrival of the period was on 10 March 2026, 7 hours 9 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in March 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 March 2026 | 7 hours 9 minutes | Carrier |
| 17 March 2026 | 6 hours 19 minutes | Carrier |
| 13 July 2026 | 3 hours 2 minutes | Carrier |
| 9 March 2026 | 2 hours 51 minutes | Carrier |
| 5 February 2026 | 1 hour 42 minutes | Carrier |
Delay causes
Why DL 2428 runs late
Carrier accounts for 83% of the 2,054 delay minutes carriers reported here, and the remaining four split what is left.
- 83%Carrier
- 15%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 83%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,697 of the 2,054 delay minutes reported here. The split is drawn from 2,054 delay minutes reported on DL 2428.
Cancellations run at 3.14%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.8% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 1,089 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 one other city pair in the data, including BNA to LGA (4), but none flew often enough under DL 2428 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MIA to JFK only.
One caution: this is a thin sample. 255 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 2428
For a booking, the cancellation rate is the figure to plan around on DL 2428: 3.14% of its 255 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- MIA to JFK, every carrier and departure
- JFK to MIA, the return direction
- American Airlines 1357 on the same route57.5%
- Delta Air Lines 1514 on the same route69.1%
- Miami International (MIA) delay statistics
- John F. Kennedy International (JFK) 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
- What a cancellation rate actually tells you (and what it hides)
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.