Flight number record

B6 948

JetBlue Airways · Las Vegas to New York

Route: LAS → JFK
Departs: 23:59
Flights: 346
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 948, check with JetBlue Airways.

B6 948 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 346 flights, with a median arrival 8 minutes early.

The national on-time rate over the same period is 77.6%, so B6 948 runs 7 points behind the country as a whole. Across a thousand flights that is about 71 extra late arrivals.

On time

70.5%

Arrivals under 15 minutes late, of 336 completed flights

Avg delay

99 min

Across delayed arrivals only, not all flights

Cancelled

2.89%

National rate is 1.81%

1 hour+ late

12.5%

National rate is 8.1%

These figures cover 346 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 948 flies

B6 948 flies LAS to JFK without a single fixed slot. Its most common scheduled departure was 23:59, used on 251 of 346 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 23:59251 flights72.5%

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 23:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and B6 948 runs level with that at 70.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

B6 948 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 948 is 11 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%, which this flight trails by 2 points.

B6 948 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 948thin sample	346	70.5%	99 min	2.89%	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 948 quarter by quarter

Quarter by quarter B6 948 held fairly steady: 66.3% in Jul–Sep 2025, 74.0% in Oct–Dec 2025, 66.7% in Jan–Mar 2026 and 75.6% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights66.3%
Oct–Dec 202574 flights74.0%
Jan–Mar 202690 flights66.7%
Apr–Jun 202690 flights75.6%

Scale runs 60% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, B6 948 did best on Wednesday at 83.0% on time and worst on Thursday at 61.2%. Each day rests on about 49 flights, so a gap of 22 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 948 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 48% of the 9,836 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.

Late-arriving aircraft
48%
Carrier
47%
National Airspace System
6%

48% 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 9,836 reported delay minutes here, that single category outweighs weather by 48 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 9,836 delay minutes reported on B6 948.

Cancellations run at 2.89%, 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

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.

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 346 flights under B6 948 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. 346 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 948

For a booking, the cancellation rate is the figure to plan around on B6 948: 2.89% of its 346 scheduled flights did not operate. A late arrival costs an hour and a half, 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