Flight number record
B6 1801
JetBlue Airways · New York to Fort Lauderdale
- Route
- JFK → FLL
- Departs
- 09:30
- Flights
- 303
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 1801, check with JetBlue Airways.
B6 1801 draws a D−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 303 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so B6 1801 runs 14 points behind the country as a whole. Across a thousand flights that is about 135 extra late arrivals.
Key figures
On time
63.8%
Arrivals under 15 minutes late, of 290 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
3.96%
National rate is 1.89%
1 hour+ late
16.2%
National rate is 8.3%
These figures cover 303 flights between September 2025 and August 2026. Beyond the headline rate, 16.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 1801 flies
B6 1801 flies JFK to FLL without a single fixed slot. Its most common scheduled departure was 09:30, used on 63 of 303 flights, with 15:30 (34 flights) next.
- Departs 09:3063 flights20.8%
- Departs 15:3034 flights11.2%
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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and B6 1801 runs 20 points worse at 63.8%. 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 1801 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 1801 is 8 points behind 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 trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 1801thin sample | 303 | 63.8% | 77 min | 3.96% | D− |
| 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 1801 quarter by quarter
B6 1801 did not run the same all year. Its best quarter was Apr–Jun 2026 at 76.2% on time and its weakest Oct–Dec 2025 at 57.8%, a swing of 18 points on roughly 76 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Oct–Dec 202566 flights57.8%
- Jan–Mar 202690 flights58.8%
- Apr–Jun 202685 flights76.2%
- Jul–Sep 202662 flights59.6%
Scale runs 50% to 80%.
By weekday, B6 1801 did best on Friday at 72.7% on time and worst on Sunday at 45.0%. Each day rests on about 43 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 1801 runs when it is late
B6 1801 often beats the schedule: 85 of 290 completed flights, 29%, arrived 15 minutes or more early. The 105 late arrivals split 25 under half an hour, 33 between 30 and 60 minutes, and 47 an hour or more.
- 15+ min early85 flights29.3%
- Within 15 min100 flights34.5%
- 15–29 min late25 flights8.6%
- 30–59 min late33 flights11.4%
- 1–2 hours late29 flights10.0%
- 2+ hours late18 flights6.2%
Scale runs 0% to 100%.
Share of 290 completed flights by arrival against schedule.
22 of 113 late departures made up the time and arrived on time, 19% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for B6 1801
The latest arrival of the period was on 8 April 2026, 5 hours 15 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 April 2026 | 5 hours 15 minutes | Late-arriving aircraft |
| 7 December 2025 | 5 hours 4 minutes | Late-arriving aircraft |
| 30 October 2025 | 4 hours 59 minutes | Late-arriving aircraft |
| 17 March 2026 | 4 hours 40 minutes | Late-arriving aircraft |
| 12 March 2026 | 4 hours 38 minutes | Late-arriving aircraft |
Delay causes
Why B6 1801 runs late
Late-arriving aircraft accounts for 45% of the 8,031 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Late-arriving aircraft
- 33%Carrier
- 20%National Airspace System
- 2%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. Across 8,031 reported delay minutes here, that single category outweighs weather by 29 to one. The split is drawn from 8,031 delay minutes reported on B6 1801.
Cancellations run at 3.96%, 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 routes
What a delay on this flight costs
16.2% 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.
Every one of the 303 flights under B6 1801 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. 303 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 1801
For a booking, the cancellation rate is the figure to plan around on B6 1801: 3.96% of its 303 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- JFK to FLL, every carrier and departure
- FLL to JFK, the return direction
- Delta Air Lines 1422 on the same route86.6%
- Delta Air Lines 305 on the same route77.9%
- Delta Air Lines 1419 on the same route72.5%
- Delta Air Lines 1414 on the same route66.2%
- JetBlue Airways 1 on the same route86.1%
- John F. Kennedy International (JFK) delay statistics
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- JetBlue Airways on-time record
- Every JetBlue Airways flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
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 ; recomputed monthly. How this data is collected.