Flight number record

B6 1

JetBlue Airways · New York to Fort Lauderdale

Route: JFK → FLL
Departs: 06:00
Flights: 325
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s B6 1, check with JetBlue Airways.

B6 1 earns an A−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 325 flights, with a median arrival 12 minutes early.

Set against the rest of the country, B6 1's record is 9 points better than the US average of 77.3%. That gap is worth roughly 88 fewer late arrivals for every thousand flights.

On time

86.1%

Arrivals under 15 minutes late, of 302 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

6.15%

National rate is 1.89%

1 hour+ late

3.3%

National rate is 8.3%

These figures cover 325 flights between September 2025 and August 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

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Schedule

When B6 1 flies

B6 1 flies JFK to FLL without a single fixed slot. Its most common scheduled departure was 06:00, used on 150 of 325 flights, with 09:59 (44 flights) next.

Departs 06:00150 flights46.2%
Departs 09:5944 flights13.5%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and B6 1 runs 3 points worse at 86.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

B6 1 next to JFK to FLL

Every carrier on JFK to FLL combined arrived on time 71.9% of the time across 3,907 flights, so B6 1 is 14 points ahead of it. JetBlue flew 2,293 flights on the same city pair under all its flight numbers, including this one, and those ran 69.4% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight beats by 15 points.

B6 1 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 1thin sample	325	86.1%	50 min	6.15%	A−
All JetBlue Airways on JFK–FLL	2,293	69.4%	71 min	5.36%	C−
All carriers on JFK–FLL	3,907	71.9%	70 min	4.76%	C−
JetBlue Airways, whole network	240,615	71.3%	77 min	3.56%	C−

Across the year

B6 1 quarter by quarter

Quarter by quarter B6 1 held fairly steady: 81.0% in Oct–Dec 2025, 87.0% in Jan–Mar 2026, 87.8% in Apr–Jun 2026 and 86.3% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202530 flights—
Oct–Dec 202567 flights81.0%
Jan–Mar 202682 flights87.0%
Apr–Jun 202685 flights87.8%
Jul–Sep 202661 flights86.3%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, B6 1 ranged from 80.0% on Friday to 90.7% on Monday. With about 46 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late B6 1 runs when it is late

B6 1 often beats the schedule: 130 of 302 completed flights, 43%, arrived 15 minutes or more early. The 42 late arrivals split 20 under half an hour, 12 between 30 and 60 minutes, and 10 an hour or more.

15+ min early130 flights43.0%
Within 15 min130 flights43.0%
15–29 min late20 flights6.6%
30–59 min late12 flights4.0%
1–2 hours late7 flights2.3%
2+ hours late3 flights1.0%

Scale runs 0% to 100%.

Share of 302 completed flights by arrival against schedule.

A late pushback is often recovered here: of 40 departures that left 15 minutes late or more, 15 still arrived on time. In the other direction, 17 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 FLL.

The worst days

Worst days for B6 1

The latest arrival of the period was on 24 August 2026, 3 hours 31 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in August 2026.

The latest arrivals of B6 1 in the period
Date	Arrived late by	Largest filed cause
24 August 2026	3 hours 31 minutes	Late-arriving aircraft
29 November 2025	3 hours 15 minutes	Carrier
18 August 2026	2 hours 55 minutes	Late-arriving aircraft
3 August 2026	1 hour 48 minutes	Carrier
1 April 2026	1 hour 41 minutes	Late-arriving aircraft

Delay causes

Why B6 1 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 2,113 reported delay minutes.

Carrier
34%
Late-arriving aircraft
33%
National Airspace System
31%
Extreme weather
1%

The largest share of delay minutes, 34%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 721 of the 2,113 delay minutes reported here. The split is drawn from 2,113 delay minutes reported on B6 1.

Cancellations run at 6.15%, against 1.89% nationally. That is roughly one flight in fifteen 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

Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

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.

Every one of the 325 flights under B6 1 in the data flew JFK to FLL. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 325 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 B6 1

For a booking, the cancellation rate is the figure to plan around on B6 1: 6.15% of its 325 scheduled flights did not operate. A late arrival costs about 50 minutes, but a cancellation costs the day, so leave a later option open.

Where to go next

A flight number here means JetBlue Airways’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 22 October 2026; recomputed monthly. How this data is collected.

Key figures