Flight number record

B6 450

JetBlue Airways · Savannah to Boston

Route: SAV → BOS
Departs: 16:10
Flights: 256
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 450, check with JetBlue Airways.

B6 450 draws a D−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 256 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so B6 450 runs 13 points behind the country as a whole. Across a thousand flights that is about 130 extra late arrivals.

On time

64.6%

Arrivals under 15 minutes late, of 246 completed flights

Avg delay

90 min

Across delayed arrivals only, not all flights

Cancelled

3.91%

National rate is 1.81%

1 hour+ late

15.0%

National rate is 8.1%

These figures cover 256 flights between July 2025 and June 2026. Beyond the headline rate, 15.0% 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 450 flies

B6 450 flies SAV to BOS without a single fixed slot. Its most common scheduled departure was 16:10, used on 40 of 256 flights, with 13:10 (27 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:1040 flights15.6%
Departs 13:1027 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 16:10 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and B6 450 runs 8 points worse at 64.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

B6 450 next to SAV to BOS

Every carrier on SAV to BOS combined arrived on time 68.4% of the time across 1,076 flights, so B6 450 is 4 points behind it. JetBlue flew 616 flights on the same city pair under all its flight numbers, including this one, and those ran 69.1% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 8 points.

B6 450 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 450thin sample	256	64.6%	90 min	3.91%	D−
All JetBlue Airways on SAV–BOS	616	69.1%	86 min	2.92%	C
All carriers on SAV–BOS	1,076	68.4%	83 min	2.79%	C
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 450 quarter by quarter

B6 450 did not run the same all year. Its best quarter was Apr–Jun 2026 at 79.6% on time and its weakest Oct–Dec 2025 at 58.9%, a swing of 21 points on roughly 85 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 202528 flights—
Oct–Dec 202592 flights58.9%
Jan–Mar 202686 flights75.0%
Apr–Jun 202650 flights79.6%

Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, B6 450 did best on Saturday at 77.1% on time and worst on Sunday at 52.9%. Each day rests on about 37 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 450 runs late

One category carries most of the weight here. National Airspace System accounts for 55% of the 7,857 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.

National Airspace System
55%
Late-arriving aircraft
40%
Carrier
5%

40% 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 7,857 reported delay minutes here, that single category outweighs weather by 40 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 7,857 delay minutes reported on B6 450.

Cancellations run at 3.91%, against 1.81% 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 15.0% 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 901 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 256 flights under B6 450 in the data flew SAV 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. 256 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 450

For a booking, the cancellation rate is the figure to plan around on B6 450: 3.91% of its 256 scheduled flights did not operate. A late arrival costs an hour and a half, 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