Carrier route record
DLFLL→JFK
Delta Air Lines · Fort Lauderdale to New York
- Flights
- 1,615
- Period
- September 2025 to August 2026
- Share of route
- 41%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on FLL to JFK carries a cancellation problem, not just a delay problem: 4.0% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,615 flights, with a median arrival 4 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate Delta on FLL to JFK from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.9%
Arrivals under 15 minutes late, of 1,545 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
4.02%
National rate is 1.89%
Whole route
70.0%
Every carrier on FLL to JFK, 3,896 flights
These figures cover 1,615 flights between September 2025 and August 2026. Beyond the headline rate, 9.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Delta against every carrier on FLL to JFK
Delta flew 1,615 of the 3,896 flights on FLL to JFK, about 41% of it. Its 74.9% on time is 5 points better than the route as a whole, which runs 70.0%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Delta at 74.9% to JetBlue at 66.5%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines (this page) | 1,615 | 74.9% | 77 min | 4.02% | C− |
| JetBlue Airways | 2,281 | 66.5% | 71 min | 5.30% | C− |
Flight by flight
Delta flight numbers on FLL to JFK
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.
Departure window
When Delta runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 31 points, against half a point between the best and worst carrier.
- 5am–8am365 flights89.3%
- 8am–11am178 flights85.2%
- 11am–2pm366 flights71.9%
- 2pm–5pm364 flights70.6%
- 5pm–8pm121 flights68.7%
- 8pm–5am221 flights58.0%
Scale runs 50% to 95%.
The 8pm–5am window is where this operation falls apart: 58.0% on time, against 89.3% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 11am–2pm window is the busiest, with 366 flights scheduled in it.
Across the year
Delta on FLL to JFK through the year
July is the worst month at 59.6% on time, 25 points below September, the best at 84.2%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. March was the busiest month here, with 155 flights.
Across the week, Wednesday is the strongest day at 82.9% on time and Sunday the weakest at 63.4%, a spread of 20 points.
Arrival by arrival
How late Delta on FLL to JFK runs when it is late
Delta on FLL to JFK often beats the schedule: 438 of 1,545 completed flights, 28%, arrived 15 minutes or more early. The 388 late arrivals split 124 under half an hour, 111 between 30 and 60 minutes, and 153 an hour or more.
- 15+ min early438 flights28.3%
- Within 15 min719 flights46.5%
- 15–29 min late124 flights8.0%
- 30–59 min late111 flights7.2%
- 1–2 hours late94 flights6.1%
- 2+ hours late59 flights3.8%
Scale runs 0% to 100%.
Share of 1,545 completed flights by arrival against schedule.
79 of 384 late departures made up the time and arrived on time, 21% of them. In the other direction, 83 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 JFK.
The worst days
Worst days for Delta on FLL to JFK
The latest arrival of the period was on 26 December 2025, 17 hours 7 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 |
|---|---|---|
| 26 December 2025 | 17 hours 7 minutes | Carrier |
| 15 February 2026 | 15 hours 26 minutes | National Airspace System |
| 25 September 2025 | 14 hours 7 minutes | Late-arriving aircraft |
| 8 March 2026 | 12 hours 21 minutes | Carrier |
| 7 February 2026 | 8 hours 37 minutes | Carrier |
Delay causes
Why Delta runs late on this route
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 30,000 reported delay minutes.
- 36%Carrier
- 31%National Airspace System
- 30%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 11,000 of the 30,000 delay minutes reported here. The split is drawn from 29,814 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.3% on time here.
Cancellations run at 4.02%, against 1.89% nationally. That is about one flight in 25 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 stage length
What a delay here costs
9.9% 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 1,069 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 return leg runs 75.3% on time across 1,614 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,615 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Delta on FLL to JFK
Put together: the delay figures matter less here than the 4.02% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,545 completed flights over 12 months sit behind that.
Related
Where to go next
- FLL to JFK, every carrier
- Delta on JFK to FLL, the return leg
- JetBlue Airways on FLL to JFK66.5%
- Delta Air Lines network-wide record
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- John F. Kennedy International (JFK) delay statistics
- The US routes with the most cancellations
- What a cancellation rate actually tells you (and what it hides)
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.