Flight number record
B6 2143
JetBlue Airways · Newark to West Palm Beach
- Route
- EWR → PBI
- Departs
- 11:00
- Flights
- 310
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s B6 2143, check with JetBlue Airways.
B6 2143 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 310 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.6%, so B6 2143 runs 7 points behind the country as a whole. Across a thousand flights that is about 65 extra late arrivals.
Key figures
On time
71.1%
Arrivals under 15 minutes late, of 298 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
2.26%
National rate is 1.81%
1 hour+ late
10.1%
National rate is 8.1%
These figures cover 310 flights between July 2025 and June 2026. Beyond the headline rate, 10.1% 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.
Schedule
When B6 2143 flies
B6 2143 flies EWR to PBI without a single fixed slot. Its most common scheduled departure was 11:00, used on 36 of 310 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 11:0036 flights11.6%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 11:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and B6 2143 runs 8 points worse at 71.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
B6 2143 next to EWR to PBI
Every carrier on EWR to PBI combined arrived on time 77.1% of the time across 3,611 flights, so B6 2143 is 6 points behind it. JetBlue flew 721 flights on the same city pair under all its flight numbers, including this one, and those ran 73.3% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 2143thin sample | 310 | 71.1% | 65 min | 2.26% | C |
| All JetBlue Airways on EWR–PBI | 721 | 73.3% | 69 min | 2.77% | C |
| All carriers on EWR–PBI | 3,611 | 77.1% | 69 min | 2.52% | B |
| JetBlue Airways, whole network | 234,468 | 72.7% | 76 min | 2.56% | C |
Across the year
B6 2143 quarter by quarter
B6 2143 did not run the same all year. Its best quarter was Apr–Jun 2026 at 82.7% on time and its weakest Oct–Dec 2025 at 61.4%, a swing of 21 points on roughly 78 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.
- Jul–Sep 202592 flights70.8%
- Oct–Dec 202586 flights61.4%
- Jan–Mar 202678 flights74.3%
- Apr–Jun 202654 flights82.7%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, B6 2143 did best on Wednesday at 84.2% on time and worst on Thursday at 62.2%. Each day rests on about 44 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Delay causes
Why B6 2143 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 5,598 reported delay minutes.
- 41%Late-arriving aircraft
- 38%National Airspace System
- 22%Carrier
- 0%Extreme weather
41% 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 5,598 reported delay minutes here, that single category outweighs weather by 41 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 5,598 delay minutes reported on B6 2143.
Cancellations sit at 2.26% against a national 1.81%, which is ordinary. Diversions add another 1.61%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.1% 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 1,024 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. 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.
Every one of the 310 flights under B6 2143 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. 310 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 2143
For a booking, B6 2143 is one of the weaker ways to fly EWR to PBI: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- EWR to PBI, every carrier and departure
- PBI to EWR, the return direction
- JetBlue Airways 143 on the same route74.3%
- United Airlines 1344 on the same route79.5%
- United Airlines 1253 on the same route88.1%
- United Airlines 1797 on the same route74.2%
- Newark Liberty International (EWR) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.