Flight number record

B6 100

JetBlue Airways · Los Angeles to Fort Lauderdale

Route: LAX → FLL
Departs: 11:20
Flights: 360
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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+. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. 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 77.6%, so B6 100 runs 4 points behind the country as a whole. Across a thousand flights that is about 44 extra late arrivals.

On time

73.2%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

0.28%

National rate is 1.81%

1 hour+ late

8.7%

National rate is 8.1%

These figures cover 360 flights between July 2025 and June 2026. Beyond the headline rate, 8.7% 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 100 flies

B6 100 flies LAX to FLL without a single fixed slot. Its most common scheduled departure was 11:20, used on 51 of 360 flights, with 13:59 (45 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:2051 flights14.2%
Departs 13:5945 flights12.5%

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 11:20 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and B6 100 runs 6 points worse at 73.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

B6 100 next to LAX to FLL

Every carrier on LAX to FLL combined arrived on time 74.0% of the time across 2,275 flights, so B6 100 is about level with it. JetBlue flew 1,748 flights on the same city pair under all its flight numbers, including this one, and those ran 75.8% on time. Across its whole network JetBlue Airways managed 72.7%, close to this flight's figure.

B6 100 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 100thin sample	360	73.2%	64 min	0.28%	C+
All JetBlue Airways on LAX–FLL	1,748	75.8%	60 min	0.97%	B+
All carriers on LAX–FLL	2,275	74.0%	60 min	1.23%	C
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	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 92.3% on time and its weakest Jan–Mar 2026 at 57.0%, a swing of 35 points on roughly 90 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 flights92.3%
Oct–Dec 202590 flights73.3%
Jan–Mar 202687 flights57.0%
Apr–Jun 202691 flights69.2%

Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, B6 100 did best on Saturday at 78.8% on time and worst on Thursday at 64.7%. Each day rests on about 51 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 100 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 51% of the 6,185 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
51%
Carrier
29%
National Airspace System
20%

51% 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 6,185 reported delay minutes here, that single category outweighs weather by 51 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 6,185 delay minutes reported on B6 100.

Cancellations are rare at 0.28%, below the national 1.81% 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

8.7% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 73.2% on time with 0.28% cancelled over 360 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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.

Key figures