Flight profile · Delta Air Lines
DL2443
New York (JFK) to Detroit (DTW) · scheduled 4:30 PM – 7:15 PM
How DL2443 performs
690 operations, June 2024 – July 2026.
DL2443 arrived on time 77.2% of the time, against 76.2% for all JFK → DTW flights, so this departure is 1.0 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 690 operations, June 2024 – July 2026 · If DL2443 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL2443 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| DL2443 | 77.2% | 2.17% | -12 min | 11.3% | 690 |
| Delta Air Lines on JFK → DTW | 76.4% | 2.65% | -12 min | 11.4% | 1,733 |
| All JFK → DTW flights | 76.2% | 2.67% | -8 min | 11.3% | 4,570 |
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
Why DL2443 runs late
Where US DOT attributed the delay minutes on this flight.
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding and fueling, all within the carrier’s 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 DL2443 on JFK → DTW. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies DL2443 comes in late, and what that does to the departure.
The aircraft flying DL2443 came in 15 or more minutes late on 20% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Each departure is matched to the flight the same aircraft flew into JFK just before it, using the tail number in the DOT file, 499 of 681 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| DL2443 | 20% |
| Network, same turn | 17% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often DL2443’s aircraft landed 15 or more minutes late is higher than the network’s. There are not enough departures in both groups to compare how it left.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
From pushback to gate
When it leaves JFK late, does that still matter by the time it reaches DTW?
DL2443 pushes back an average of 22.5 minutes late and reaches the gate at DTW an average of 12.4 minutes late. The 10.1 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. Its 30.7 minutes on the taxiways at JFK is about what any departure from the airport in that hour spends.
On arrival at DTW, DL2443 spends 8.4 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 1.0 minutes shorter than a typical DTW arrival (9.3 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached DTW. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 20,836 departures from JFK scheduled in the clock hour DL2443 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at DTW (388,616 flights), not just DL2443’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
The hour it leaves JFK
Part of any flight’s record belongs to the clock rather than to the flight. DL2443 has one departure time, so this is what that time is worth.
On-time arrival rate. 20,836 departures from JFK are scheduled in the 4 PM–5 PM hour over the period, against 351,635 across the whole day.
DL2443 is scheduled out of JFK at 4:30 PM, in the 4 PM–5 PM bank. Departures from JFK in that hour arrive on time 74.7% of the time against 77.0% across the airport’s whole day, so the hour DL2443 leaves in is an ordinary one for JFK and explains nothing about its record either way.
The two airport figures cover every departure from JFK to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026 · Hours below 120 departures are not scored.
Other routes DL2443 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 |
|---|---|---|---|
| ORF→ATL Norfolk to Atlanta | April 20, 2025 | 1 | — |
| MSY→LGA New Orleans to New York | March 9, 2025 – April 13, 2025 | 11 | — |
| SLC→SFO Salt Lake City to San Francisco | July 1, 2023 – June 6, 2024 | 232 | 73.6% |
| SFO→SLC San Francisco to Salt Lake City | July 1, 2023 – June 6, 2024 | 231 | 77.4% |
| ATL→IAD Atlanta to Washington | April 9, 2024 – May 6, 2024 | 28 | — |
| IAD→ATL Washington to Atlanta | April 9, 2024 – May 6, 2024 | 28 | — |
| SLC→MSO Salt Lake City to Missoula | March 9, 2024 | 1 | — |
| MSP→OMA Minneapolis to Omaha | January 8, 2024 – March 8, 2024 | 61 | — |
| CLE→MSP Cleveland to Minneapolis | October 9–27, 2023 | 19 | — |
Because the same number has served different journeys, the statistics above describe only the route DL2443 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.
68 min late
against a median of 12 min early
DL2443 has an average that understates its risk: a typical arrival is 12 min early, but the worst tenth are 80 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 690 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Data and methodology
Calculated by FlyerIntel from 690 records of DL2443 operating JFK → DTW, 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.
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