Carrier route record
B6JFK→FLL
JetBlue Airways · New York to Fort Lauderdale
- Flights
- 2,270
- Period
- July 2025 to June 2026
- Share of route
- 58%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on JFK to FLL carries a cancellation problem, not just a delay problem: 4.0% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, about seven flights in ten 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 2,270 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.6%, so JetBlue on JFK to FLL runs 8 points behind the country as a whole. Across a thousand flights that is about 76 extra late arrivals.
Key figures
On time
70.0%
Arrivals under 15 minutes late, of 2,171 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
3.96%
National rate is 1.81%
Whole route
72.7%
Every carrier on JFK to FLL, 3,884 flights
These figures cover 2,270 flights between July 2025 and June 2026. Beyond the headline rate, 11.6% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
JetBlue against every carrier on JFK to FLL
JetBlue flew 2,270 of the 3,884 flights on JFK to FLL, most of the route. Its 70.0% on time is 3 points worse than the route as a whole, which runs 72.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 76.5% to JetBlue at 70.0%.
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 | 1,614 | 76.5% | 69 min | 3.47% | B− |
| JetBlue Airways (this page) | 2,270 | 70.0% | 69 min | 3.96% | C− |
Flight by flight
JetBlue flight numbers on JFK to FLL
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 33 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am562 flights85.1%
- 8am–11am410 flights73.9%
- 11am–2pm299 flights74.4%
- 2pm–5pm413 flights63.8%
- 5pm–8pm346 flights57.6%
- 8pm–5am240 flights51.8%
Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 51.8% on time, against 85.1% 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 5am–8am window is the busiest, with 562 flights scheduled in it.
Across the year
JetBlue on JFK to FLL through the year
December is the weak month at 52.5% on time, against 84.9% in May. 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. March was the busiest month here, with 233 flights.
Across the week, Tuesday is the strongest day at 78.2% on time and Sunday the weakest at 60.2%. 18 points is a smaller lever than departure hour, but it is free.
Delay causes
Why JetBlue runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 45,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 45%Late-arriving aircraft
- 27%Carrier
- 25%National Airspace System
- 3%Extreme weather
- 0%Security
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 45,000 reported delay minutes here, that single category outweighs weather by 15 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 44,641 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 85.1% on time here.
Cancellations run at 3.96%, against 1.81% 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.6% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 65.7% on time across 2,262 flights, 4 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
The sample behind these figures is 2,270 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 JFK to FLL
Put together: the delay figures matter less here than the 3.96% 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. 2,171 completed flights over 12 months sit behind that.
Related
Where to go next
- JFK to FLL, every carrier
- JetBlue on FLL to JFK, the return leg
- Delta Air Lines on JFK to FLL76.5%
- JetBlue Airways network-wide record
- John F. Kennedy International (JFK) delay statistics
- Fort Lauderdale-Hollywood International (FLL) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.