Flight profile · Delta Air Lines
DL2428
Miami (MIA) to New York (JFK) · scheduled 7:40 AM – 10:00 AM
How DL2428 performs
621 operations, June 2024 – August 2026.
Between its first and last recorded date on MIA → JFK, DL2428 averaged about 5 operations a week (621 in 816 days, cancelled ones included).
DL2428 arrived on time 87.9% of the time, against 71.4% for all MIA → JFK flights, so this departure is 16.5 percentage points better than the route as a whole. Against Delta Air Lines’ own flights on this route it is 17.0 points better.
DL2428’s scheduled departure has moved during the period FlyerIntel has on file: it typically left around 7:00 AM earlier on, and around 7:45 AM more recently — a 45-minute shift, not the few minutes of day-to-day rounding every published schedule carries. Confirm the current departure time before booking around an older listing.
Source: US DOT Bureau of Transportation Statistics · 621 operations, June 2024 – August 2026 · If DL2428 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How DL2428 compares to other flight numbers, not just to itself.
This flight runs unusually far ahead of the carrier's own average on this route, better than 99% of 12,152 comparable flight numbers.
87.9% on time for this specific departure, against 70.9% for the same carrier's other flights on this route.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where DL2428 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| DL2428 | 87.9% | 1.61% | -8 min | 4.3% | 621 |
| Delta Air Lines on MIA → JFK | 70.9% | 1.96% | -3 min | 13.0% | 4,989 |
| All MIA → JFK flights | 71.4% | 2.19% | -4 min | 12.6% | 16,202 |
DL2428 cancelled 10 of 621 operations (1.61%), below the 2.19% for MIA → JFK.
4.3% of DL2428’s arrivals were an hour or more late, against 12.6% across MIA → JFK, so the long delays are less common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
Why DL2428 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all 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 DL2428 on MIA → JFK. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies DL2428 comes in late, and what that does to the departure.
DL2428 is usually the aircraft’s first flight of the day: the schedule gives it a median of 7.7 hours on the ground at MIA, so its “inbound” is mostly the aircraft’s arrival the evening before.
When the aircraft came in 15 or more minutes late, DL2428 pushed back an average of 12 minutes late; when it came in on time or early, an average of 0 minutes late.
Matched by tail number to the aircraft’s previous flight into MIA: 583 of 611 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| DL2428 | 26% | 27% | 6% |
| Network, same turn | 29% | 12% | 9% |
A night on the ground usually absorbs a late arrival, but this flight has passed a late inbound on more often than the network does.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often DL2428’s aircraft landed 15 or more minutes late is lower than the network’s and, once the aircraft was late, how often DL2428 left 15 or more minutes late is higher than the network’s.
Which Flight Numbers Pay for a Late Aircraft ranks the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
From pushback to gate
When it leaves MIA late, does that still matter by the time it reaches JFK?
DL2428 pushes back an average of 6.7 minutes late and reaches the gate at JFK an average of 1.4 minutes late. The 5.2 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. It spends 19.1 minutes on the taxiways at MIA, 1.1 minutes longer than a typical MIA departure in the same hour.
On arrival at JFK, DL2428 spends 9.2 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 2.3 minutes shorter than a typical JFK arrival (11.5 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 20,409 MIA departures. Taxi-in is landing to gate, set against 360,684 arrivals at JFK. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026
The hour it leaves MIA
DL2428 has one departure time, 7:40 AM, so this is what that hour at MIA is worth.
On-time arrival rate. 20,409 departures from MIA are scheduled in the 7 AM–8 AM hour over the period, against 349,146 across the whole day.
DL2428 is scheduled out of MIA at 7:40 AM, in the 7 AM–8 AM bank. Departures from MIA in that hour arrive on time 89.2% of the time against 73.2% across the airport’s whole day — the slot alone is worth 16.1 points better before anything about this particular flight is considered.
Both airport figures cover every destination from MIA, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – August 2026 · Hours below 120 departures are not scored.
Other routes DL2428 has flown
Carriers reassign flight numbers. DL2428 also served these 4 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| BNA→LGA Nashville to New York | November 15, 2025 – December 13, 2025 | 4 | — |
| SEA→SAN Seattle to San Diego | July 1, 2023 – June 6, 2024 | 212 | 85.6% |
| SAN→SEA San Diego to Seattle | July 5, 2023 – June 6, 2024 | 202 | 86.1% |
| SLC→SNA Salt Lake City to Santa Ana | April 9, 2024 – May 6, 2024 | 28 | — |
The figures above describe only MIA → JFK, the route DL2428 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
18 min late
against a median of 8 min early
Percentiles over 621 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – August 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL2428 this flight | Delta Air Lines | 87.9% | 8 min early | 621 |
| AA944 | American Airlines | 67.7% | 2 min early | 658 |
| DL1514 | Delta Air Lines | 65.8% | 5 min early | 624 |
| AA1922 | American Airlines | 60.2% | 6 min late | 648 |
| AA1357 | American Airlines | 57.3% | 8 min late | 1,066 |
Among all 5 departures on this route with at least 600 operations, DL2428 has the highest on-time rate. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.
Data and methodology
Calculated by FlyerIntel from 621 records of DL2428 operating MIA → JFK, 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 reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed