Carrier route record
OOLAS→BOI
SkyWest Airlines · Las Vegas to Boise
- Flights
- 219
- Period
- July 2025 to June 2026
- Share of route
- 16%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on LAS to BOI sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 219 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on LAS to BOI from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.8%
Arrivals under 15 minutes late, of 218 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
0.46%
National rate is 1.81%
Whole route
73.3%
Every carrier on LAS to BOI, 1,400 flights
These figures cover 219 flights between July 2025 and June 2026. Beyond the headline rate, 10.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
SkyWest against every carrier on LAS to BOI
SkyWest flew 219 of the 1,400 flights on LAS to BOI, about 16% of it. Its 74.8% on time is 2 points better than the route as a whole, which runs 73.3%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Alaska at 85.9% to Spirit at 66.0%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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 |
|---|---|---|---|---|---|
| Alaska Airlinesthin sample | 71 | 85.9% | 104 min | 0.00% | A+ |
| SkyWest Airlines (this page)thin sample | 219 | 74.8% | 78 min | 0.46% | C+ |
| Southwest Airlines | 1,049 | 72.5% | 49 min | 0.10% | C+ |
| Allegiant Airthin sample | 14 | 71.4% | 78 min | 0.00% | C+ |
| Spirit Airlinesthin sample | 47 | 66.0% | 80 min | 0.00% | C+ |
Departure window
When SkyWest 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 219 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm—
- 2pm–5pm49 flights71.4%
- 5pm–8pm30 flights73.3%
- 8pm–5am140 flights76.3%
Scale runs 65% to 80%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is the strongest at 76.3% on time. The full set of windows spans 5 points.
Across the year
SkyWest on LAS to BOI through the year
- Jul–Sep 202574 flights78.4%
- Oct–Dec 202566 flights73.8%
- Jan–Mar 202630 flights73.3%
- Apr–Jun 202649 flights71.4%
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 74.8% on time across 219 flights.
Quarter by quarter SkyWest on LAS to BOI held fairly steady: 78.4% in Jul–Sep 2025, 73.8% in Oct–Dec 2025, 73.3% in Jan–Mar 2026 and 71.4% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
Across the week, Monday is the strongest day at 82.4% on time and Sunday the weakest at 58.8%. 24 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 58% of the 4,305 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 58%Late-arriving aircraft
- 21%National Airspace System
- 14%Carrier
- 7%Extreme weather
58% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,305 reported delay minutes here, that single category outweighs weather by 9 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,305 reported delay minutes.
Cancellations are rare at 0.46%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 519 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 80.8% on time across 219 flights, 6 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.
One caution: this is a thin sample. 219 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 SkyWest on LAS to BOI
Put together: treat all of this as provisional. 219 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 74.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 218 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.