Flight number record

B6 424

JetBlue Airways · Los Angeles to New York

Route: LAX → JFK
Departs: 12:40
Flights: 332
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 424, check with JetBlue Airways.

B6 424 lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 332 flights, with a median arrival 11 minutes early.

On time

79.6%

Arrivals under 15 minutes late, of 318 completed flights

Avg delay

80 min

Across delayed arrivals only, not all flights

Cancelled

2.71%

National rate is 1.81%

1 hour+ late

10.4%

National rate is 8.1%

These figures cover 332 flights between July 2025 and June 2026. Beyond the headline rate, 10.4% 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 424 flies

B6 424 flies LAX to JFK without a single fixed slot. Its most common scheduled departure was 12:40, used on 38 of 332 flights, with 12:35 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 12:4038 flights11.4%
Departs 12:3535 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 12:40 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and B6 424 runs level with that at 79.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

B6 424 next to LAX to JFK

Every carrier on LAX to JFK combined arrived on time 79.1% of the time across 10,287 flights, so B6 424 is about level with it. JetBlue flew 3,485 flights on the same city pair under all its flight numbers, including this one, and those ran 79.3% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight beats by 7 points.

B6 424 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 424thin sample	332	79.6%	80 min	2.71%	B
All JetBlue Airways on LAX–JFK	3,485	79.3%	71 min	2.24%	B
All carriers on LAX–JFK	10,287	79.1%	92 min	2.04%	B
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 424 quarter by quarter

Quarter by quarter B6 424 held fairly steady: 82.7% in Jul–Sep 2025, 80.5% in Oct–Dec 2025, 75.0% in Jan–Mar 2026 and 80.0% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202579 flights82.7%
Oct–Dec 202588 flights80.5%
Jan–Mar 202679 flights75.0%
Apr–Jun 202686 flights80.0%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, B6 424 did best on Wednesday at 86.0% on time and worst on Monday at 70.5%. Each day rests on about 47 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 424 runs late

One category carries most of the weight here. National Airspace System accounts for 53% of the 5,210 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
53%
Late-arriving aircraft
29%
Carrier
17%

53% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,782 minutes out of 5,210, against a national NAS share of 21%. The split is drawn from 5,210 delay minutes reported on B6 424.

Cancellations run at 2.71%, 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.4% 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.

At 2,475 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

Every one of the 332 flights under B6 424 in the data flew LAX to JFK. 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. 332 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 424

For a booking, the cancellation rate is the figure to plan around on B6 424: 2.71% of its 332 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