Flight number record
B6 143
JetBlue Airways · Newark to West Palm Beach
- Route
- EWR → PBI
- Departs
- 06:00
- Flights
- 275
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 143, check with JetBlue Airways.
B6 143 sits in the middle of the pack with a C−. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 275 flights, with a median arrival 6 minutes early.
Key figures
On time
74.2%
Arrivals under 15 minutes late, of 264 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
4.00%
National rate is 1.89%
1 hour+ late
8.7%
National rate is 8.3%
These figures cover 275 flights between September 2025 and August 2026. Beyond the headline rate, 8.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 143 flies
B6 143 flies EWR to PBI without a single fixed slot. Its most common scheduled departure was 06:00, used on 71 of 275 flights, with 08:00 (49 flights) next.
- Departs 06:0071 flights25.8%
- Departs 08:0049 flights17.8%
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 143 runs 15 points worse at 74.2%. 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 143 next to EWR to PBI
Every carrier on EWR to PBI combined arrived on time 77.5% of the time across 3,395 flights, so B6 143 is 3 points behind it. JetBlue flew 659 flights on the same city pair under all its flight numbers, including this one, and those ran 73.8% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 143thin sample | 275 | 74.2% | 72 min | 4.00% | C− |
| All JetBlue Airways on EWR–PBI | 659 | 73.8% | 62 min | 3.49% | C− |
| All carriers on EWR–PBI | 3,395 | 77.5% | 66 min | 2.80% | B |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 143 quarter by quarter
Quarter by quarter B6 143 held fairly steady: 76.6% in Oct–Dec 2025, 72.8% in Jan–Mar 2026 and 82.2% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20252 flights—
- Oct–Dec 202566 flights76.6%
- Jan–Mar 202685 flights72.8%
- Apr–Jun 202691 flights82.2%
- Jul–Sep 202631 flights—
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, B6 143 did best on Monday at 81.1% on time and worst on Saturday at 63.2%. Each day rests on about 39 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 143 runs when it is late
B6 143 often beats the schedule: 95 of 264 completed flights, 36%, arrived 15 minutes or more early. The 68 late arrivals split 23 under half an hour, 22 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early95 flights36.0%
- Within 15 min101 flights38.3%
- 15–29 min late23 flights8.7%
- 30–59 min late22 flights8.3%
- 1–2 hours late14 flights5.3%
- 2+ hours late9 flights3.4%
Scale runs 0% to 100%.
Share of 264 completed flights by arrival against schedule.
12 of 55 late departures made up the time and arrived on time, 22% of them. In the other direction, 25 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 PBI.
The worst days
Worst days for B6 143
The latest arrival of the period was on 3 April 2026, 6 hours 50 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 April 2026 | 6 hours 50 minutes | Late-arriving aircraft |
| 9 July 2026 | 5 hours 59 minutes | Extreme weather |
| 14 December 2025 | 5 hours 39 minutes | Extreme weather |
| 4 July 2026 | 5 hours 4 minutes | National Airspace System |
| 22 July 2026 | 3 hours 21 minutes | Late-arriving aircraft |
Delay causes
Why B6 143 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 4,867 reported delay minutes.
- 37%National Airspace System
- 27%Carrier
- 20%Late-arriving aircraft
- 15%Extreme weather
- 0%Security
Extreme weather accounts for 15% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.6 times the usual weather exposure. The split is drawn from 4,867 delay minutes reported on B6 143.
Cancellations run at 4.00%, 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
8.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 1,024 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 275 flights under B6 143 in the data flew EWR to PBI. 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. 275 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 143
For a booking, the cancellation rate is the figure to plan around on B6 143: 4.00% of its 275 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
- EWR to PBI, every carrier and departure
- PBI to EWR, the return direction
- JetBlue Airways 2143 on the same route72.3%
- United Airlines 1344 on the same route79.7%
- United Airlines 1771 on the same route93.0%
- Newark Liberty International (EWR) delay statistics
- Palm Beach International (PBI) 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
- What a cancellation rate actually tells you (and what it hides)
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.