BOS to LAS flight delays
Boston, MA (BOS) Las Vegas, NV (LAS) · 2,381 miles
1,638 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
75.61%
Arrived on time
Within 15 minutes of schedule
1.22%
Cancelled
Share of scheduled flights
66 min
When late, late by
Average across delayed arrivals
17 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The 2 airlines here are separated by under 4 points — close enough to call a tie. Choose on price and departure time.
Flights from Boston to Las Vegas run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, Delta Air Lines arrived on time most often on BOS to LAS. JetBlue Airways was late most often. Flights ran closest to schedule in August and worst in January.
Every airline on BOS to LAS
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| JetBlue Airways | 1,045 | 74.32% | 1.15% | 69 min | D |
| Delta Air Lines | 593 | 77.87% | 1.35% | 58 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
LAS to BOS Las Vegas back to Boston 76.41% on time COther routes from Boston
Common questions
Are flights from Boston to Las Vegas usually delayed?
75.61% of flights on the BOS to LAS route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Boston to Las Vegas?
Delta Air Lines, at 77.87% on time across 593 flights. The least punctual on the route was JetBlue Airways at 74.32%.
How often are BOS to LAS flights cancelled?
1.22% of scheduled flights did not operate — about 12 in every thousand. That is in the normal range.
What is the best month to fly Boston to Las Vegas?
August, when 84.9% of flights arrived on time. The worst was January at 69.5%.
When BOS to LAS flights are late, how late are they?
About 66 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on BOS to LAS during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →