Flight number record
DL 2387
Delta Air Lines · Miami to New York
- Route
- MIA → LGA
- Departs
- 07:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2387, check with Delta Air Lines.
DL 2387 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 365 flights, with a median arrival 7 minutes early.
Set against the rest of the country, DL 2387's record is 9 points better than the US average of 77.3%. That gap is worth roughly 92 fewer late arrivals for every thousand flights.
Key figures
On time
86.5%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
2.19%
National rate is 1.89%
1 hour+ late
3.7%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 7 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 2387 flies
DL 2387 flies MIA to LGA without a single fixed slot. Its most common scheduled departure was 07:00, used on 199 of 365 flights, with 06:25 (49 flights) and 07:20 (39 flights) next.
- Departs 07:00199 flights54.5%
- Departs 06:2549 flights13.4%
- Departs 07:2039 flights10.7%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2387 runs 3 points worse at 86.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 2387 next to MIA to LGA
Every carrier on MIA to LGA combined arrived on time 67.4% of the time across 5,955 flights, so DL 2387 is 19 points ahead of it. Delta flew 1,916 flights on the same city pair under all its flight numbers, including this one, and those ran 73.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2387 | 365 | 86.5% | 58 min | 2.19% | A |
| All Delta Air Lines on MIA–LGA | 1,916 | 73.4% | 64 min | 3.91% | C− |
| All carriers on MIA–LGA | 5,955 | 67.4% | 77 min | 4.21% | C− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2387 quarter by quarter
DL 2387 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jan–Mar 2026 at 81.2%, a swing of 12 points on roughly 73 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 flights93.3%
- Oct–Dec 202592 flights86.8%
- Jan–Mar 202690 flights81.2%
- Apr–Jun 202691 flights85.4%
- Jul–Sep 202662 flights91.8%
Scale runs 75% to 100%.
By weekday, DL 2387 ranged from 80.4% on Saturday to 92.2% on Wednesday. With about 52 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 2387 runs when it is late
DL 2387 often beats the schedule: 95 of 356 completed flights, 27%, arrived 15 minutes or more early. The 48 late arrivals split 21 under half an hour, 14 between 30 and 60 minutes, and 13 an hour or more.
- 15+ min early95 flights26.7%
- Within 15 min213 flights59.8%
- 15–29 min late21 flights5.9%
- 30–59 min late14 flights3.9%
- 1–2 hours late5 flights1.4%
- 2+ hours late8 flights2.2%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
A late pushback is often recovered here: of 38 departures that left 15 minutes late or more, 12 still arrived on time. In the other direction, 22 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 LGA.
The worst days
Worst days for DL 2387
The latest arrival of the period was on 7 September 2025, 4 hours 18 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 September 2025 | 4 hours 18 minutes | Extreme weather |
| 17 March 2026 | 3 hours 25 minutes | Carrier |
| 15 May 2026 | 2 hours 57 minutes | Carrier |
| 14 December 2025 | 2 hours 23 minutes | National Airspace System |
| 31 December 2025 | 2 hours 23 minutes | Carrier |
Delay causes
Why DL 2387 runs late
Carrier accounts for 59% of the 2,793 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 32%National Airspace System
- 9%Extreme weather
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,642 of the 2,793 delay minutes reported here. The split is drawn from 2,793 delay minutes reported on DL 2387.
Cancellations sit at 2.19% against a national 1.89%, which is ordinary. Diversions add another 0.27%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.7% 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 1,096 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.
Every one of the 365 flights under DL 2387 in the data flew MIA to LGA. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 2387
For a booking, read DL 2387 as 86.5% on time with 2.19% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MIA to LGA, every carrier and departure
- LGA to MIA, the return direction
- American Airlines 1389 on the same route57.1%
- Delta Air Lines 2339 on the same route77.9%
- Miami International (MIA) delay statistics
- LaGuardia (LGA) 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
- Worst months to fly in the US, ranked by the data
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.