Carrier route record
B6LAS→BOS
JetBlue Airways · Las Vegas to Boston
- Flights
- 1,046
- Period
- September 2025 to August 2026
- Share of route
- 65%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on LAS to BOS sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 1,046 flights, with a median arrival 11 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate JetBlue on LAS to BOS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.1%
Arrivals under 15 minutes late, of 1,024 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
1.72%
National rate is 1.89%
Whole route
74.6%
Every carrier on LAS to BOS, 1,597 flights
These figures cover 1,046 flights between September 2025 and August 2026. Beyond the headline rate, 11.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
JetBlue against every carrier on LAS to BOS
JetBlue flew 1,046 of the 1,597 flights on LAS to BOS, most of the route. Its 75.1% on time is about level with the route as a whole at 74.6%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from JetBlue at 75.1% to Delta at 73.7%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| JetBlue Airways (this page) | 1,046 | 75.1% | 95 min | 1.72% | B |
| Delta Air Lines | 551 | 73.7% | 77 min | 1.45% | C |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When JetBlue runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 1,046 flights.
- 5am–8am30 flights—
- 8am–11am152 flights75.8%
- 11am–2pm305 flights71.3%
- 2pm–5pm208 flights80.0%
- 5pm–8pm—
- 8pm–5am351 flights73.6%
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 71.3% on time against 80.0% for 2pm–5pm. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8pm–5am window is the busiest, with 351 flights scheduled in it.
Across the year
JetBlue on LAS to BOS through the year
July is the worst month at 61.0% on time, 28 points below December, the best at 88.9%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 117 flights.
Across the week, Tuesday is the strongest day at 80.5% on time and Sunday the weakest at 67.8%, a spread of 13 points.
Arrival by arrival
How late JetBlue on LAS to BOS runs when it is late
JetBlue on LAS to BOS often beats the schedule: 447 of 1,024 completed flights, 44%, arrived 15 minutes or more early. The 255 late arrivals split 64 under half an hour, 69 between 30 and 60 minutes, and 122 an hour or more.
- 15+ min early447 flights43.7%
- Within 15 min322 flights31.4%
- 15–29 min late64 flights6.3%
- 30–59 min late69 flights6.7%
- 1–2 hours late67 flights6.5%
- 2+ hours late55 flights5.4%
Scale runs 0% to 100%.
Share of 1,024 completed flights by arrival against schedule.
66 of 289 late departures made up the time and arrived on time, 23% of them. 32 flights left on time and still arrived late.
The worst days
Worst days for JetBlue on LAS to BOS
The latest arrival of the period was on 17 May 2026, 18 hours 3 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 May 2026 | 18 hours 3 minutes | Carrier |
| 25 July 2026 | 17 hours 9 minutes | Carrier |
| 11 July 2026 | 16 hours 52 minutes | Carrier |
| 5 April 2026 | 14 hours 50 minutes | Carrier |
| 17 April 2026 | 7 hours 35 minutes | Late-arriving aircraft |
Delay causes
Why JetBlue runs late on this route
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 24,000 reported delay minutes.
- 34%Late-arriving aircraft
- 33%Carrier
- 30%National Airspace System
- 3%Extreme weather
- 0%Security
No single cause dominates. late-arriving aircraft at 34%, carrier at 33% and national airspace system at 30% split the 24,000 reported delay minutes between them. An even spread like this usually means the operation is running close to its designed capacity with no one obvious weak point, and it is the hardest pattern for a traveller to route around. The split is drawn from 24,296 reported delay minutes.
Cancellations sit at 1.72% against a national 1.89%, which is ordinary. Diversions add another 0.38%.
Connections and stage length
What a delay here costs
11.9% 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 2,381 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.
The return leg runs 73.2% on time across 1,045 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 1,046 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 JetBlue on LAS to BOS
Put together: treat all of this as provisional. 1,046 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 75.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,024 completed flights over 12 months sit behind that.
Related
Where to go next
- LAS to BOS, every carrier
- JetBlue on BOS to LAS, the return leg
- Delta Air Lines on LAS to BOS73.7%
- JetBlue Airways network-wide record
- Harry Reid International (LAS) delay statistics
- Boston Logan International (BOS) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.