Flight number record
DL 2500
Delta Air Lines · New York to Miami
- Route
- JFK → MIA
- Departs
- 15:10
- Flights
- 298
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2500, check with Delta Air Lines.
DL 2500 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 298 flights, with a median arrival 5 minutes early.
The national on-time rate over the same period is 77.3%, so DL 2500 runs 7 points behind the country as a whole. Across a thousand flights that is about 65 extra late arrivals.
Key figures
On time
70.8%
Arrivals under 15 minutes late, of 288 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
3.02%
National rate is 1.89%
1 hour+ late
11.8%
National rate is 8.3%
These figures cover 298 flights between September 2025 and August 2026. Beyond the headline rate, 11.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 2500 flies
DL 2500 flies JFK to MIA without a single fixed slot. Its most common scheduled departure was 15:10, used on 56 of 298 flights, with 15:29 (52 flights) and 15:20 (31 flights) next.
- Departs 15:1056 flights18.8%
- Departs 15:2952 flights17.4%
- Departs 15:2031 flights10.4%
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 15:10 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 2500 runs level with that at 70.8%. 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 2500 next to JFK to MIA
Every carrier on JFK to MIA combined arrived on time 76.8% of the time across 4,526 flights, so DL 2500 is 6 points behind it. Delta flew 1,621 flights on the same city pair under all its flight numbers, including this one, and those ran 75.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2500thin sample | 298 | 70.8% | 62 min | 3.02% | C− |
| All Delta Air Lines on JFK–MIA | 1,621 | 75.8% | 71 min | 3.45% | B− |
| All carriers on JFK–MIA | 4,526 | 76.8% | 97 min | 3.12% | B− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2500 quarter by quarter
DL 2500 did not run the same all year. Its best quarter was Apr–Jun 2026 at 81.1% on time and its weakest Oct–Dec 2025 at 61.8%, a swing of 19 points on roughly 75 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.
- Oct–Dec 202557 flights61.8%
- Jan–Mar 202688 flights67.5%
- Apr–Jun 202691 flights81.1%
- Jul–Sep 202662 flights68.3%
Scale runs 55% to 85%.
By weekday, DL 2500 did best on Tuesday at 81.6% on time and worst on Thursday at 62.8%. Each day rests on about 43 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2500 runs when it is late
DL 2500 often beats the schedule: 102 of 288 completed flights, 35%, arrived 15 minutes or more early. The 84 late arrivals split 27 under half an hour, 23 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early102 flights35.4%
- Within 15 min102 flights35.4%
- 15–29 min late27 flights9.4%
- 30–59 min late23 flights8.0%
- 1–2 hours late24 flights8.3%
- 2+ hours late10 flights3.5%
Scale runs 0% to 100%.
Share of 288 completed flights by arrival against schedule.
21 of 76 late departures made up the time and arrived on time, 28% of them. In the other direction, 29 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 MIA.
The worst days
Worst days for DL 2500
The latest arrival of the period was on 6 December 2025, 4 hours 8 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 December 2025 | 4 hours 8 minutes | Carrier |
| 21 April 2026 | 2 hours 56 minutes | Carrier |
| 9 November 2025 | 2 hours 37 minutes | National Airspace System |
| 27 July 2026 | 2 hours 35 minutes | National Airspace System |
| 28 August 2026 | 2 hours 26 minutes | Carrier |
Delay causes
Why DL 2500 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 5,184 reported delay minutes.
- 37%Carrier
- 32%Late-arriving aircraft
- 30%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,892 of the 5,184 delay minutes reported here. The split is drawn from 5,184 delay minutes reported on DL 2500.
Cancellations run at 3.02%, against 1.89% nationally. That is roughly 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
11.8% 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 1,089 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 MIA to JFK (191), but none flew often enough under DL 2500 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to JFK to MIA only.
One caution: this is a thin sample. 298 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 2500
For a booking, the cancellation rate is the figure to plan around on DL 2500: 3.02% of its 298 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- JFK to MIA, every carrier and departure
- MIA to JFK, the return direction
- American Airlines 2017 on the same route84.8%
- Delta Air Lines 1514 on the same route77.0%
- Delta Air Lines 1528 on the same route84.8%
- Delta Air Lines 1428 on the same route68.7%
- American Airlines 688 on the same route75.2%
- John F. Kennedy International (JFK) delay statistics
- Miami International (MIA) 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.