Flight number record

B6 401

JetBlue Airways · Boston to New Orleans

Route: BOS → MSY
Departs: 07:00
Flights: 298
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 401, check with JetBlue Airways.

B6 401 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 298 flights, with a median arrival 7 minutes early.

The national on-time rate over the same period is 77.6%, so B6 401 runs 5 points behind the country as a whole. Across a thousand flights that is about 47 extra late arrivals.

On time

72.9%

Arrivals under 15 minutes late, of 295 completed flights

Avg delay

95 min

Across delayed arrivals only, not all flights

Cancelled

1.01%

National rate is 1.81%

1 hour+ late

12.5%

National rate is 8.1%

These figures cover 298 flights between July 2025 and June 2026. Beyond the headline rate, 12.5% 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 401 flies

B6 401 flies BOS to MSY without a single fixed slot. Its most common scheduled departure was 07:00, used on 44 of 298 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:0044 flights14.8%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and B6 401 runs 16 points worse at 72.9%. 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 401 next to BOS to MSY

Every carrier on BOS to MSY combined arrived on time 76.6% of the time across 855 flights, so B6 401 is 4 points behind it. JetBlue flew 471 flights on the same city pair under all its flight numbers, including this one, and those ran 71.0% on time. Across its whole network JetBlue Airways managed 72.7%, close to this flight's figure.

B6 401 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 401thin sample	298	72.9%	95 min	1.01%	C
All JetBlue Airways on BOS–MSY	471	71.0%	84 min	1.06%	C
All carriers on BOS–MSY	855	76.6%	76 min	1.52%	B
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 401 quarter by quarter

B6 401 did not run the same all year. Its best quarter was Apr–Jun 2026 at 83.5% on time and its weakest Jul–Sep 2025 at 58.9%, a swing of 25 points on roughly 75 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 202556 flights58.9%
Oct–Dec 202577 flights74.0%
Jan–Mar 202674 flights69.0%
Apr–Jun 202691 flights83.5%

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, B6 401 did best on Wednesday at 89.2% on time and worst on Thursday at 57.8%. Each day rests on about 43 flights, so a gap of 31 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 401 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 7,585 reported delay minutes.

Late-arriving aircraft
42%
National Airspace System
31%
Carrier
21%
Extreme weather
6%

42% 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 7,585 reported delay minutes here, that single category outweighs weather by 7 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 7,585 delay minutes reported on B6 401.

Cancellations sit at 1.01% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 12.5% 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 1,367 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 298 flights under B6 401 in the data flew BOS to MSY. 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. 298 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 401

For a booking, B6 401 is a flight to put a long connection behind. 12.5% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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