Flight number record
B6 948
JetBlue Airways · Las Vegas to New York
- Route
- LAS → JFK
- Departs
- 23:59
- Flights
- 345
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. The late ones land close to two hours behind schedule. That rests on 345 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.3%, so B6 948 runs 7 points behind the country as a whole. Across a thousand flights that is about 72 extra late arrivals.
Key figures
On time
70.1%
Arrivals under 15 minutes late, of 335 completed flights
Avg delay
101 min
Across delayed arrivals only, not all flights
Cancelled
2.61%
National rate is 1.89%
1 hour+ late
12.2%
National rate is 8.3%
These figures cover 345 flights between September 2025 and August 2026. Beyond the headline rate, 12.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 252 of 345 flights.
- Departs 23:59252 flights73.0%
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 23:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and B6 948 runs level with that at 70.1%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
B6 948 next to LAS to JFK
Every carrier on LAS to JFK combined arrived on time 80.0% of the time across 3,717 flights, so B6 948 is 10 points behind it. JetBlue flew 1,380 flights on the same city pair under all its flight numbers, including this one, and those ran 76.7% on time. Across its whole network JetBlue Airways managed 71.3%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 948thin sample | 345 | 70.1% | 101 min | 2.61% | C |
| All JetBlue Airways on LAS–JFK | 1,380 | 76.7% | 94 min | 3.70% | B− |
| All carriers on LAS–JFK | 3,717 | 80.0% | 85 min | 2.96% | B |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 948 quarter by quarter
B6 948 did not run the same all year. Its best quarter was Apr–Jun 2026 at 75.6% on time and its weakest Jul–Sep 2026 at 60.3%, a swing of 15 points on roughly 69 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 202530 flights73.3%
- Oct–Dec 202574 flights74.0%
- Jan–Mar 202690 flights66.7%
- Apr–Jun 202690 flights75.6%
- Jul–Sep 202661 flights60.3%
Scale runs 50% to 80%.
By weekday, B6 948 did best on Wednesday at 84.4% on time and worst on Thursday at 63.3%. Each day rests on about 49 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 948 runs when it is late
B6 948 often beats the schedule: 116 of 335 completed flights, 35%, arrived 15 minutes or more early. The 100 late arrivals split 29 under half an hour, 30 between 30 and 60 minutes, and 41 an hour or more.
- 15+ min early116 flights34.6%
- Within 15 min119 flights35.5%
- 15–29 min late29 flights8.7%
- 30–59 min late30 flights9.0%
- 1–2 hours late23 flights6.9%
- 2+ hours late18 flights5.4%
Scale runs 0% to 100%.
Share of 335 completed flights by arrival against schedule.
26 of 115 late departures made up the time and arrived on time, 23% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for B6 948
The latest arrival of the period was on 1 January 2026, 19 hours 39 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 January 2026 | 19 hours 39 minutes | Carrier |
| 24 February 2026 | 18 hours 16 minutes | Carrier |
| 17 May 2026 | 17 hours 2 minutes | Carrier |
| 19 May 2026 | 10 hours 39 minutes | Late-arriving aircraft |
| 30 July 2026 | 3 hours 21 minutes | Late-arriving aircraft |
Delay causes
Why B6 948 runs late
Carrier accounts for 48% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 46%Late-arriving aircraft
- 5%National Airspace System
- 0%Extreme weather
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 10,000 reported delay minutes here, that single category outweighs weather by 46 to one. The split is drawn from 10,045 delay minutes reported on B6 948.
Cancellations run at 2.61%, against 1.89% 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
12.2% 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.
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 345 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. 345 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: 2.61% of its 345 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LAS to JFK, every carrier and departure
- JFK to LAS, the return direction
- Delta Air Lines 333 on the same route84.4%
- Delta Air Lines 510 on the same route93.8%
- JetBlue Airways 348 on the same route70.0%
- Delta Air Lines 795 on the same route75.5%
- Harry Reid International (LAS) delay statistics
- John F. Kennedy International (JFK) delay statistics
- JetBlue Airways on-time record
- Every JetBlue Airways flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
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 ; recomputed monthly. How this data is collected.