LAS to BOI flight delays
Las Vegas, NV (LAS) Boise, ID (BOI) · 519 miles
1,400 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
73.32%
Arrived on time
Within 15 minutes of schedule
0.14%
Cancelled
Share of scheduled flights
56 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In August it ran 28.6 points more punctual than in June — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. BOI to LAS arrives on time 7.8 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The 2 airlines here are separated by under 3 points — close enough to call a tie. Choose on price and departure time.
Flights from Las Vegas to Boise run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on LAS to BOI. Southwest Airlines was late most often. Flights ran closest to schedule in August and worst in June.
Every airline on LAS to BOI
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 1,049 | 72.52% | 0.1% | 49 min | D |
| SkyWest Airlines | 219 | 74.77% | 0.46% | 78 min | C |
| Alaska Airlines | 71 | 85.92% | 0% | 104 min | — |
| Spirit Airlines | 47 | 65.96% | 0% | 80 min | — |
| Allegiant Air | 14 | 71.43% | 0% | 78 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
BOI to LAS Boise back to Las Vegas 81.13% on time BOther routes from Las Vegas
Common questions
Are flights from Las Vegas to Boise usually delayed?
73.32% of flights on the LAS to BOI route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airline is most on time from Las Vegas to Boise?
SkyWest Airlines, at 74.77% on time across 219 flights. The least punctual on the route was Southwest Airlines at 72.52%.
How often are LAS to BOI flights cancelled?
0.14% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
What is the best month to fly Las Vegas to Boise?
August, when 83.3% of flights arrived on time. The worst was June at 54.7%.
When LAS to BOI flights are late, how late are they?
About 56 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 LAS to BOI 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 →