Flight number record
B6 100
JetBlue Airways · Los Angeles to Fort Lauderdale
- Route
- LAX → FLL
- Departs
- 12:05
- Flights
- 360
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 100, check with JetBlue Airways.
B6 100 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 360 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so B6 100 runs 6 points behind the country as a whole. Across a thousand flights that is about 61 extra late arrivals.
Key figures
On time
71.2%
Arrivals under 15 minutes late, of 358 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
0.56%
National rate is 1.89%
1 hour+ late
8.4%
National rate is 8.3%
These figures cover 360 flights between September 2025 and August 2026. Beyond the headline rate, 8.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 100 flies
B6 100 flies LAX to FLL without a single fixed slot. Its most common scheduled departure was 12:05, used on 57 of 360 flights, with 11:20 (51 flights) and 13:59 (45 flights) next.
- Departs 12:0557 flights15.8%
- Departs 11:2051 flights14.2%
- Departs 13:5945 flights12.5%
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 12:05 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and B6 100 runs 7 points worse at 71.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
B6 100 next to LAX to FLL
Every carrier on LAX to FLL combined arrived on time 73.2% of the time across 2,331 flights, so B6 100 is 2 points behind it. JetBlue flew 1,810 flights on the same city pair under all its flight numbers, including this one, and those ran 75.3% on time. Across its whole network JetBlue Airways managed 71.3%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 100thin sample | 360 | 71.2% | 58 min | 0.56% | C+ |
| All JetBlue Airways on LAX–FLL | 1,810 | 75.3% | 59 min | 1.22% | B |
| All carriers on LAX–FLL | 2,331 | 73.2% | 58 min | 1.46% | C |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 100 quarter by quarter
B6 100 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jan–Mar 2026 at 57.0%, a swing of 36 points on roughly 72 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 202530 flights93.3%
- Oct–Dec 202590 flights73.3%
- Jan–Mar 202687 flights57.0%
- Apr–Jun 202691 flights69.2%
- Jul–Sep 202662 flights80.3%
Scale runs 50% to 100%.
By weekday, B6 100 did best on Saturday at 82.7% on time and worst on Thursday at 60.8%. Each day rests on about 51 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 100 runs when it is late
The 103 late arrivals split 45 under half an hour, 28 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early85 flights23.7%
- Within 15 min170 flights47.5%
- 15–29 min late45 flights12.6%
- 30–59 min late28 flights7.8%
- 1–2 hours late17 flights4.7%
- 2+ hours late13 flights3.6%
Scale runs 0% to 100%.
Share of 358 completed flights by arrival against schedule.
18 of 81 late departures made up the time and arrived on time, 22% of them. In the other direction, 40 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 100
The latest arrival of the period was on 16 March 2026, 4 hours 53 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 March 2026 | 4 hours 53 minutes | Late-arriving aircraft |
| 20 November 2025 | 4 hours 52 minutes | Late-arriving aircraft |
| 10 September 2025 | 3 hours 21 minutes | Late-arriving aircraft |
| 20 June 2026 | 3 hours 14 minutes | Carrier |
| 5 November 2025 | 3 hours 2 minutes | Carrier |
Delay causes
Why B6 100 runs late
Late-arriving aircraft accounts for 50% of the 5,987 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Late-arriving aircraft
- 28%Carrier
- 22%National Airspace System
50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,987 reported delay minutes here, that single category outweighs weather by 50 to one. The split is drawn from 5,987 delay minutes reported on B6 100.
Cancellations are rare at 0.56%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
8.4% 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 about an hour, which a normal layover absorbs.
At 2,343 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
Every one of the 360 flights under B6 100 in the data flew LAX 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. 360 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 100
For a booking, read B6 100 as 71.2% on time with 0.56% cancelled over 360 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LAX to FLL, every carrier and departure
- FLL to LAX, the return direction
- JetBlue Airways 1700 on the same route74.0%
- Delta Air Lines 477 on the same route71.3%
- JetBlue Airways 700 on the same route78.7%
- Los Angeles International (LAX) 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.