Flight number record

B6 348

JetBlue Airways · Las Vegas to New York

Route: LAS → JFK
Departs: 13:17
Flights: 317
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 348, check with JetBlue Airways.

B6 348 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 317 flights, with a median arrival 4 minutes early.

The national on-time rate over the same period is 77.6%, so B6 348 runs 6 points behind the country as a whole. Across a thousand flights that is about 57 extra late arrivals.

On time

71.9%

Arrivals under 15 minutes late, of 306 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

2.84%

National rate is 1.81%

1 hour+ late

12.1%

National rate is 8.1%

These figures cover 317 flights between July 2025 and June 2026. Beyond the headline rate, 12.1% 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 348 flies

B6 348 flies LAS to JFK without a single fixed slot. Its most common scheduled departure was 13:17, used on 51 of 317 flights, with 13:35 (45 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:1751 flights16.1%
Departs 13:3545 flights14.2%

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 13:17 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and B6 348 runs 7 points worse at 71.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

B6 348 next to LAS to JFK

Every carrier on LAS to JFK combined arrived on time 81.3% of the time across 3,710 flights, so B6 348 is 9 points behind it. JetBlue flew 1,373 flights on the same city pair under all its flight numbers, including this one, and those ran 78.6% on time. Across its whole network JetBlue Airways managed 72.7%, close to this flight's figure.

B6 348 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 348thin sample	317	71.9%	75 min	2.84%	C
All JetBlue Airways on LAS–JFK	1,373	78.6%	92 min	2.77%	B
All carriers on LAS–JFK	3,710	81.3%	87 min	2.40%	B
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 348 quarter by quarter

B6 348 did not run the same all year. Its best quarter was Apr–Jun 2026 at 78.8% on time and its weakest Jan–Mar 2026 at 62.7%, a swing of 16 points on roughly 79 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 202579 flights66.2%
Oct–Dec 202583 flights77.5%
Jan–Mar 202670 flights62.7%
Apr–Jun 202685 flights78.8%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, B6 348 did best on Tuesday at 82.2% on time and worst on Sunday at 56.5%. Each day rests on about 45 flights, so a gap of 26 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 348 runs late

One category carries most of the weight here. National Airspace System accounts for 53% of the 6,438 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%
Carrier
23%
Late-arriving aircraft
22%
Extreme weather
3%

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 3,393 minutes out of 6,438, against a national NAS share of 21%. The split is drawn from 6,438 delay minutes reported on B6 348.

Cancellations run at 2.84%, against 1.81% nationally. That is roughly 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. 12.1% 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 2,248 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 317 flights under B6 348 in the data flew LAS 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. 317 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 348

For a booking, the cancellation rate is the figure to plan around on B6 348: 2.84% of its 317 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