Route profile
BOS→LAS
Flight reliability, delays and best times to fly from Boston to Las Vegas, 2,381 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 53% of comparable major US routes (4,598 compared)
Calculated from 5,171 flights. How this is calculated
BOS → LAS arrives on time 76.9% of the time; the return trip, LAS → BOS, arrives on time 76.3% of the time.
BOS → LAS spends 31.5 minutes on the ground on a 2,381-mile trip: 22.4 minutes from pushback to wheels-up at BOS and 9.1 minutes from touchdown to gate at LAS.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where BOS to LAS differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
BOS to LAS is at its best against routes of similar length for flights scheduled at 6 PM: 74.5% arrive on time, 6.2 points ahead of the 68.3% those routes manage at that hour. Against all other routes the gap is 5.9 points.
BOS to LAS struggles most at 5 PM: 66.4% of its flights scheduled then arrive on time, 6 points behind the 72.4% on routes of similar length at the same hour.
In February, BOS to LAS runs 15.8 points below routes of similar length, 64.8% on time to 80.6%. Against all other routes the gap is 16.7 points.
BOS to LAS against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 6 PM departures | 74.5% | routes of similar length | 68.3% | +6.2 pts | 667 here, 61,647 there |
| Hour: 5 PM departures | 66.4% | routes of similar length | 72.4% | −6.0 pts | 441 here, 57,450 there |
| Month: February | 64.8% | routes of similar length | 80.6% | −15.8 pts | 372 here, 72,278 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 2,381 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
When it goes wrong
July 2023 – July 2026
47 min late
against a median of 8 min early
Percentiles over 5,171 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at LAS after arriving from BOS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 37% | Likely to miss |
| 45 min | 22% | High risk |
| 60 min | 15% | Some risk |
| 90 min | 7.8% | Some risk |
| 120 min | 4.6% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.75% of the time and diverts 0.31% of the time, which a late arrival never shows up in.
Chance of missing is the share of 5,116 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 47 minutes late (90th-percentile gate arrival delay), over 5,171 operations.
Any other layover length: connection checker.
Best time to fly
BOS → LAS flights departing 5–9 AM arrived on time 82.4% of the time, against 66.2% for 3–6 PM departures, a gap of 16.2 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 86.5% on time from 520 flights
- 7 AM: 81.7% on time from 1,435 flights
- 8 AM: 80.2% on time from 483 flights
- 9 AM: 82.9% on time from 189 flights
- 10 AM: 79.9% on time from 248 flights
- 11 AM: 76.3% on time from 199 flights
- 12 PM to 3 PM: too few flights to score
- 4 PM: 69.9% on time from 168 flights
- 5 PM: 66.4% on time from 447 flights
- 6 PM: 74.5% on time from 675 flights
- 7 PM: 68.5% on time from 593 flights
- 8 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why BOS → LAS runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for BOS → LAS. Only delays of 15 minutes or more are attributed.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| JetBlue | 3,125 | 75.4% | 0.80% | -8 min | 9.2% |
| Delta Air Lines | 1,855 | 80.2% | 0.70% | -8 min | 5.7% |
JetBlue flew 62.8% of the 4,980 flights listed.
Delta Air Lines arrived on time 4.8 percentage points more often than JetBlue on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 5.9 percentage points.
By month
- Jan: 74.0%
- Feb: 64.8%
- Mar: 78.2%
- Apr: 80.0%
- May: 79.0%
- Jun: 76.6%
- Jul: 69.2%
- Aug: 73.3%
- Sep: 83.3%
- Oct: 78.9%
- Nov: 81.6%
- Dec: 80.8%
February is historically the weakest month and September the strongest, a spread of 18.5 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 50.0% from 136 flights
- August 2023: 69.9% from 141 flights
- September 2023: 76.9% from 160 flights
- October 2023: 69.8% from 173 flights
- November 2023: 72.6% from 147 flights
- December 2023: 86.1% from 137 flights
- January 2024: too few flights to score (115)
- February 2024: too few flights to score (114)
- March 2024: 80.3% from 128 flights
- April 2024: 82.9% from 124 flights
- May 2024: 78.8% from 137 flights
- June 2024: 76.7% from 121 flights
- July 2024: too few flights to score (113)
- August 2024: 67.9% from 140 flights
- September 2024: 91.3% from 160 flights
- October 2024: 94.3% from 176 flights
- November 2024: 90.8% from 142 flights
- December 2024: 82.8% from 136 flights
- January 2025: 79.0% from 138 flights
- February 2025: 48.2% from 140 flights
- March 2025: 83.1% from 173 flights
- April 2025: 76.2% from 172 flights
- May 2025: 82.8% from 180 flights
- June 2025: 80.0% from 137 flights
- July 2025: 76.3% from 122 flights
- August 2025: too few flights to score (106)
- September 2025: 81.5% from 146 flights
- October 2025: 72.0% from 165 flights
- November 2025: too few flights to score (116)
- December 2025: 72.5% from 121 flights
- January 2026: 69.5% from 139 flights
- February 2026: 69.7% from 130 flights
- March 2026: 71.4% from 168 flights
- April 2026: 81.8% from 165 flights
- May 2026: 74.8% from 159 flights
- June 2026: too few flights to score (101)
- July 2026: too few flights to score (93)
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 75.4% against 79.9% in the 12 months before — declining by 4.5 percentage points.
Data and methodology
Calculated by FlyerIntel from 5,171 BOS → LAS flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed