Flight number record

B6 470

JetBlue Airways · Fort Lauderdale to Boston

Route: FLL → BOS
Departs: 20:10
Flights: 363
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 470, check with JetBlue Airways.

B6 470 draws a D. Roughly 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 363 flights, with a median arrival 6 minutes late.

The national on-time rate over the same period is 77.6%, so B6 470 runs 17 points behind the country as a whole. Across a thousand flights that is about 173 extra late arrivals.

On time

60.3%

Arrivals under 15 minutes late, of 353 completed flights

Avg delay

77 min

Across delayed arrivals only, not all flights

Cancelled

2.75%

National rate is 1.81%

1 hour+ late

18.7%

National rate is 8.1%

These figures cover 363 flights between July 2025 and June 2026. Beyond the headline rate, 18.7% 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 470 flies

B6 470 flies FLL to BOS without a single fixed slot. Its most common scheduled departure was 20:10, used on 86 of 363 flights, with 20:00 (56 flights) and 20:45 (50 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:1086 flights23.7%
Departs 20:0056 flights15.4%
Departs 20:4550 flights13.8%

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 20:10 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and B6 470 runs 10 points worse at 60.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

B6 470 next to FLL to BOS

Every carrier on FLL to BOS combined arrived on time 66.5% of the time across 3,406 flights, so B6 470 is 6 points behind it. JetBlue flew 1,952 flights on the same city pair under all its flight numbers, including this one, and those ran 65.6% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 12 points.

B6 470 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 470thin sample	363	60.3%	77 min	2.75%	D
All JetBlue Airways on FLL–BOS	1,952	65.6%	78 min	2.92%	C
All carriers on FLL–BOS	3,406	66.5%	78 min	3.26%	C−
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 470 quarter by quarter

B6 470 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.8% on time and its weakest Jul–Sep 2025 at 47.2%, a swing of 31 points on roughly 91 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 flights47.2%
Oct–Dec 202591 flights60.4%
Jan–Mar 202690 flights55.4%
Apr–Jun 202690 flights77.8%

Scale runs 40% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, B6 470 did best on Wednesday at 71.2% on time and worst on Sunday at 42.9%. Each day rests on about 52 flights, so a gap of 28 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 470 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 11,000 reported delay minutes.

Late-arriving aircraft
39%
Carrier
34%
National Airspace System
15%
Extreme weather
11%
Security
1%

39% 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 11,000 reported delay minutes here, that single category outweighs weather by 4 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 10,758 delay minutes reported on B6 470.

Cancellations run at 2.75%, against 1.81% nationally. That is roughly one flight in 40 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 18.7% 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 1,237 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 363 flights under B6 470 in the data flew FLL to BOS. 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. 363 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 470

For a booking, the cancellation rate is the figure to plan around on B6 470: 2.75% of its 363 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.

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