Flight number record

B6 484

JetBlue Airways · Raleigh to Boston

Route: RDU → BOS
Departs: 09:00
Flights: 314
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 484, check with JetBlue Airways.

B6 484 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 314 flights, with a median arrival 13 minutes early.

Set against the rest of the country, B6 484's record is 8 points better than the US average of 77.6%. That gap is worth roughly 77 fewer late arrivals for every thousand flights.

On time

85.3%

Arrivals under 15 minutes late, of 306 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

2.55%

National rate is 1.81%

1 hour+ late

5.2%

National rate is 8.1%

These figures cover 314 flights between July 2025 and June 2026. The median arrival is 13 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When B6 484 flies

B6 484 flies RDU to BOS without a single fixed slot. Its most common scheduled departure was 09:00, used on 50 of 314 flights, with 08:58 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:0050 flights15.9%
Departs 08:5833 flights10.5%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and B6 484 runs level with that at 85.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

B6 484 next to RDU to BOS

Every carrier on RDU to BOS combined arrived on time 78.8% of the time across 2,815 flights, so B6 484 is 7 points ahead of it. JetBlue flew 1,083 flights on the same city pair under all its flight numbers, including this one, and those ran 76.4% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight beats by 13 points.

B6 484 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 484thin sample	314	85.3%	66 min	2.55%	A
All JetBlue Airways on RDU–BOS	1,083	76.4%	79 min	2.77%	B
All carriers on RDU–BOS	2,815	78.8%	82 min	2.59%	B
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 484 quarter by quarter

B6 484 did not run the same all year. Its best quarter was Jul–Sep 2025 at 92.4% on time and its weakest Oct–Dec 2025 at 74.4%, a swing of 18 points on roughly 79 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 202579 flights92.4%
Oct–Dec 202586 flights74.4%
Jan–Mar 202670 flights84.1%
Apr–Jun 202679 flights91.0%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, B6 484 ranged from 81.2% on Friday to 89.8% on Tuesday. With about 45 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why B6 484 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 62% of the 2,977 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
62%
Carrier
25%
National Airspace System
13%

62% 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 2,977 reported delay minutes here, that single category outweighs weather by 62 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 2,977 delay minutes reported on B6 484.

Cancellations run at 2.55%, against 1.81% nationally. That is about 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

5.2% 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.

The 612 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 314 flights under B6 484 in the data flew RDU 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. 314 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 484

For a booking, the cancellation rate is the figure to plan around on B6 484: 2.55% of its 314 scheduled flights did not operate. A late arrival costs about 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