Flight number record
B6 376
JetBlue Airways · Fort Lauderdale to Philadelphia
- Route
- FLL → PHL
- Departs
- 20:59
- Flights
- 292
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 376, check with JetBlue Airways.
B6 376 draws a C−. 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 292 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so B6 376 runs 12 points behind the country as a whole. Across a thousand flights that is about 116 extra late arrivals.
Key figures
On time
65.7%
Arrivals under 15 minutes late, of 280 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
3.77%
National rate is 1.89%
1 hour+ late
16.8%
National rate is 8.3%
These figures cover 292 flights between September 2025 and August 2026. Beyond the headline rate, 16.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 376 flies
B6 376 flies FLL to PHL without a single fixed slot. Its most common scheduled departure was 20:59, used on 88 of 292 flights, with 20:20 (48 flights) and 20:05 (45 flights) next.
- Departs 20:5988 flights30.1%
- Departs 20:2048 flights16.4%
- Departs 20:0545 flights15.4%
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 20:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and B6 376 runs 4 points worse at 65.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
B6 376 next to FLL to PHL
Every carrier on FLL to PHL combined arrived on time 72.0% of the time across 3,589 flights, so B6 376 is 6 points behind it. JetBlue flew 732 flights on the same city pair under all its flight numbers, including this one, and those ran 69.0% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 376thin sample | 292 | 65.7% | 79 min | 3.77% | C− |
| All JetBlue Airways on FLL–PHL | 732 | 69.0% | 73 min | 3.28% | C− |
| All carriers on FLL–PHL | 3,589 | 72.0% | 97 min | 3.46% | C− |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 376 quarter by quarter
B6 376 did not run the same all year. Its best quarter was Apr–Jun 2026 at 75.8% on time and its weakest Jul–Sep 2026 at 54.5%, a swing of 21 points on roughly 73 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 flights67.2%
- Jan–Mar 202674 flights60.0%
- Apr–Jun 202691 flights75.8%
- Jul–Sep 202661 flights54.5%
Scale runs 45% to 80%.
By weekday, B6 376 did best on Wednesday at 77.5% on time and worst on Monday at 52.5%. Each day rests on about 42 flights, so a gap of 25 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 376 runs when it is late
The 96 late arrivals split 27 under half an hour, 22 between 30 and 60 minutes, and 47 an hour or more.
- 15+ min early66 flights23.6%
- Within 15 min118 flights42.1%
- 15–29 min late27 flights9.6%
- 30–59 min late22 flights7.9%
- 1–2 hours late25 flights8.9%
- 2+ hours late22 flights7.9%
Scale runs 0% to 100%.
Share of 280 completed flights by arrival against schedule.
18 of 104 late departures made up the time and arrived on time, 17% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for B6 376
The latest arrival of the period was on 15 February 2026, 5 hours 20 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in August 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 February 2026 | 5 hours 20 minutes | Carrier |
| 3 August 2026 | 4 hours 2 minutes | Late-arriving aircraft |
| 26 August 2026 | 3 hours 47 minutes | Late-arriving aircraft |
| 16 March 2026 | 3 hours 39 minutes | Extreme weather |
| 21 August 2026 | 3 hours 37 minutes | Late-arriving aircraft |
Delay causes
Why B6 376 runs late
Late-arriving aircraft accounts for 53% of the 7,614 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Late-arriving aircraft
- 33%Carrier
- 11%National Airspace System
- 3%Extreme weather
- 0%Security
53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,614 reported delay minutes here, that single category outweighs weather by 18 to one. The split is drawn from 7,614 delay minutes reported on B6 376.
Cancellations run at 3.77%, 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
16.8% 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 993 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 292 flights under B6 376 in the data flew FLL to PHL. 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. 292 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 376
For a booking, the cancellation rate is the figure to plan around on B6 376: 3.77% of its 292 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
- FLL to PHL, every carrier and departure
- PHL to FLL, the return direction
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- Philadelphia International (PHL) 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.