Carrier route record
B6FLL→JFK
JetBlue Airways · Fort Lauderdale to New York
- Flights
- 2,281
- Period
- September 2025 to August 2026
- Share of route
- 59%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on FLL to JFK carries a cancellation problem, not just a delay problem: 5.3% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about two flights in three 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 2,281 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so JetBlue on FLL to JFK runs 11 points behind the country as a whole. Across a thousand flights that is about 108 extra late arrivals.
Key figures
On time
66.5%
Arrivals under 15 minutes late, of 2,156 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
5.30%
National rate is 1.89%
Whole route
70.0%
Every carrier on FLL to JFK, 3,896 flights
These figures cover 2,281 flights between September 2025 and August 2026. Beyond the headline rate, 13.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
JetBlue against every carrier on FLL to JFK
JetBlue flew 2,281 of the 3,896 flights on FLL to JFK, most of the route. Its 66.5% on time is 4 points worse than the route as a whole, which runs 70.0%. Ranked by on-time rate it is last 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 | 1,615 | 74.9% | 77 min | 4.02% | C− |
| JetBlue Airways (this page) | 2,281 | 66.5% | 71 min | 5.30% | C− |
Flight by flight
JetBlue flight numbers on FLL to JFK
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Departure window
When JetBlue runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 39 points, against half a point between the best and worst carrier.
- 5am–8am393 flights91.8%
- 8am–11am406 flights72.5%
- 11am–2pm361 flights67.8%
- 2pm–5pm203 flights60.0%
- 5pm–8pm498 flights53.0%
- 8pm–5am420 flights53.9%
Scale runs 45% to 95%.
The 5pm–8pm window is where this operation falls apart: 53.0% on time, against 91.8% 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 5pm–8pm window is the busiest, with 498 flights scheduled in it.
Across the year
JetBlue on FLL to JFK through the year
February is the weak month at 52.9% on time, against 86.1% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. December was the busiest month here, with 232 flights.
Across the week, Tuesday is the strongest day at 74.2% on time and Sunday the weakest at 52.9%, a spread of 21 points.
Arrival by arrival
How late JetBlue on FLL to JFK runs when it is late
The 723 late arrivals split 196 under half an hour, 231 between 30 and 60 minutes, and 296 an hour or more.
- 15+ min early514 flights23.8%
- Within 15 min919 flights42.6%
- 15–29 min late196 flights9.1%
- 30–59 min late231 flights10.7%
- 1–2 hours late175 flights8.1%
- 2+ hours late121 flights5.6%
Scale runs 0% to 100%.
Share of 2,156 completed flights by arrival against schedule.
140 of 751 late departures made up the time and arrived on time, 19% of them. In the other direction, 112 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 JetBlue on FLL to JFK
The latest arrival of the period was on 7 December 2025, 7 hours 18 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across December, August and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 December 2025 | 7 hours 18 minutes | Late-arriving aircraft |
| 28 August 2026 | 6 hours 7 minutes | Carrier |
| 6 August 2026 | 5 hours 41 minutes | National Airspace System |
| 5 July 2026 | 5 hours 35 minutes | Late-arriving aircraft |
| 14 December 2025 | 5 hours 32 minutes | National Airspace System |
Delay causes
Why JetBlue 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 52,000 reported delay minutes.
- 41%Late-arriving aircraft
- 31%Carrier
- 26%National Airspace System
- 2%Extreme weather
- 0%Security
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 52,000 reported delay minutes here, that single category outweighs weather by 20 to one. The split is drawn from 51,602 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 91.8% on time here.
Cancellations run at 5.30%, against 1.89% nationally. That is about one flight in twenty 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
13.7% 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 69.4% on time across 2,293 flights, within 3 points 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 2,281 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 JetBlue on FLL to JFK
Put together: the delay figures matter less here than the 5.30% 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. 2,156 completed flights over 12 months sit behind that.
Related
Where to go next
- FLL to JFK, every carrier
- JetBlue on JFK to FLL, the return leg
- Delta Air Lines on FLL to JFK74.9%
- JetBlue Airways network-wide record
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- John F. Kennedy International (JFK) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.