Flight number record

B6 523

JetBlue Airways · New York to Los Angeles

Route: JFK → LAX
Departs: 09:20
Flights: 308
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 523, check with JetBlue Airways.

B6 523 lands a B, 3 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 roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 308 flights, with a median arrival 9 minutes early.

On time

80.9%

Arrivals under 15 minutes late, of 299 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

2.92%

National rate is 1.81%

1 hour+ late

5.7%

National rate is 8.1%

These figures cover 308 flights between July 2025 and June 2026. The median arrival is 9 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 523 flies

B6 523 flies JFK to LAX without a single fixed slot. Its most common scheduled departure was 09:20, used on 45 of 308 flights, with 07:30 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:2045 flights14.6%
Departs 07:3035 flights11.4%

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 09:20 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and B6 523 runs 3 points worse at 80.9%. 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 523 next to JFK to LAX

Every carrier on JFK to LAX combined arrived on time 77.6% of the time across 10,284 flights, so B6 523 is 3 points ahead of it. JetBlue flew 3,486 flights on the same city pair under all its flight numbers, including this one, and those ran 75.6% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight beats by 8 points.

B6 523 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 523thin sample	308	80.9%	51 min	2.92%	B
All JetBlue Airways on JFK–LAX	3,486	75.6%	69 min	2.01%	B
All carriers on JFK–LAX	10,284	77.6%	77 min	1.94%	B
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 523 quarter by quarter

Quarter by quarter B6 523 held fairly steady: 77.1% in Jul–Sep 2025, 81.2% in Oct–Dec 2025, 77.6% in Jan–Mar 2026 and 86.6% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202583 flights77.1%
Oct–Dec 202592 flights81.2%
Jan–Mar 202651 flights77.6%
Apr–Jun 202682 flights86.6%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, B6 523 did best on Tuesday at 88.4% on time and worst on Sunday at 71.7%. Each day rests on about 44 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 523 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 2,915 reported delay minutes.

National Airspace System
37%
Carrier
37%
Late-arriving aircraft
26%
Extreme weather
0%

37% 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 1,076 minutes out of 2,915, against a national NAS share of 21%. The split is drawn from 2,915 delay minutes reported on B6 523.

Cancellations run at 2.92%, against 1.81% nationally. That is roughly one flight in 30 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

5.7% 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 roughly 50 minutes, which a normal layover absorbs.

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 308 flights under B6 523 in the data flew JFK to LAX. 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. 308 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 523

For a booking, the cancellation rate is the figure to plan around on B6 523: 2.92% of its 308 scheduled flights did not operate. A late arrival costs roughly 50 minutes, 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