Carrier route record

B6FLL→JFK

JetBlue Airways · Fort Lauderdale to New York

Flights: 2,262
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 FLL to JFK carries a cancellation problem, not just a delay problem: 3.9% of scheduled flights never operate, against 1.8% 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 2,262 flights, with a median arrival 1 minute late.

The national on-time rate over the same period is 77.6%, so JetBlue on FLL to JFK runs 12 points behind the country as a whole. Across a thousand flights that is about 119 extra late arrivals.

On time

65.7%

Arrivals under 15 minutes late, of 2,169 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

3.93%

National rate is 1.81%

Whole route

70.2%

Every carrier on FLL to JFK, 3,877 flights

These figures cover 2,262 flights between July 2025 and June 2026. Beyond the headline rate, 14.2% 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 FLL to JFK

JetBlue flew 2,262 of the 3,877 flights on FLL to JFK, most of the route. Its 65.7% on time is 5 points worse than the route as a whole, which runs 70.2%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 76.4% to JetBlue at 65.7%.

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.

On-time performance by carrier on FLL to JFK
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	1,615	76.4%	85 min	3.65%	B−
JetBlue Airways (this page)	2,262	65.7%	72 min	3.93%	C−

Flight by flight

JetBlue flight numbers on FLL to JFK

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 40 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–8am392 flights91.6%
8am–11am295 flights72.4%
11am–2pm364 flights70.3%
2pm–5pm233 flights60.6%
5pm–8pm558 flights53.4%
8pm–5am420 flights51.4%

Scale runs 45% to 95%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 51.4% on time, against 91.6% 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 558 flights scheduled in it.

Across the year

JetBlue on FLL to JFK through the year

Darker means more delays. Figures are on-time percentages.September best, February worst

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 74.5% on time and Sunday the weakest at 52.1%. 22 points is a smaller lever than departure hour, but it is free.

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 53,000 reported delay minutes.

Late-arriving aircraft
39%
National Airspace System
31%
Carrier
28%
Extreme weather
2%
Security
0%

39% 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 53,000 reported delay minutes here, that single category outweighs weather by 17 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 53,300 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 91.6% on time here.

Cancellations run at 3.93%, 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. 14.2% 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 70.0% on time across 2,270 flights, 4 points above 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 2,262 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 3.93% 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. 2,169 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures