Flight number record

B6 401

JetBlue Airways · Boston to New Orleans

Route: BOS → MSY
Departs: 07:00
Flights: 306
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 306 flights, with a median arrival 7 minutes early.

On time

74.3%

Arrivals under 15 minutes late, of 300 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

1.96%

National rate is 1.89%

1 hour+ late

9.3%

National rate is 8.3%

These figures cover 306 flights between September 2025 and August 2026. Beyond the headline rate, 9.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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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 306 flights.

Departs 07:0044 flights14.4%

Scale runs 0% to 100%.

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 15 points worse at 74.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

B6 401 next to BOS to MSY

Every carrier on BOS to MSY combined arrived on time 76.4% of the time across 863 flights, so B6 401 is 2 points behind it. JetBlue flew 479 flights on the same city pair under all its flight numbers, including this one, and those ran 72.0% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight beats by 3 points.

B6 401 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 401thin sample	306	74.3%	87 min	1.96%	C
All JetBlue Airways on BOS–MSY	479	72.0%	79 min	1.67%	C
All carriers on BOS–MSY	863	76.4%	76 min	1.85%	B
JetBlue Airways, whole network	240,615	71.3%	77 min	3.56%	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 2026 at 66.1%, a swing of 17 points on roughly 77 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 20252 flights—
Oct–Dec 202577 flights74.0%
Jan–Mar 202674 flights69.0%
Apr–Jun 202691 flights83.5%
Jul–Sep 202662 flights66.1%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, B6 401 did best on Wednesday at 85.0% on time and worst on Thursday at 64.4%. Each day rests on about 44 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late B6 401 runs when it is late

B6 401 often beats the schedule: 111 of 300 completed flights, 37%, arrived 15 minutes or more early. The 77 late arrivals split 29 under half an hour, 20 between 30 and 60 minutes, and 28 an hour or more.

15+ min early111 flights37.0%
Within 15 min112 flights37.3%
15–29 min late29 flights9.7%
30–59 min late20 flights6.7%
1–2 hours late18 flights6.0%
2+ hours late10 flights3.3%

Scale runs 0% to 100%.

Share of 300 completed flights by arrival against schedule.

12 of 64 late departures made up the time and arrived on time, 19% of them. In the other direction, 25 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at MSY.

The worst days

Worst days for B6 401

The latest arrival of the period was on 20 February 2026, 22 hours 42 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as a late-arriving aircraft.

The latest arrivals of B6 401 in the period
Date	Arrived late by	Largest filed cause
20 February 2026	22 hours 42 minutes	National Airspace System
24 January 2026	9 hours 34 minutes	Late-arriving aircraft
2 August 2026	5 hours 29 minutes	Late-arriving aircraft
13 October 2025	5 hours 12 minutes	Late-arriving aircraft
7 February 2026	4 hours 24 minutes	Extreme weather

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 6,732 reported delay minutes.

Late-arriving aircraft
38%
National Airspace System
38%
Carrier
19%
Extreme weather
5%

38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,732 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 6,732 delay minutes reported on B6 401.

Cancellations sit at 1.96% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

9.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.

Every one of the 306 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. 306 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, read B6 401 as 74.3% on time with 1.96% cancelled over 306 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures