Las Vegas (LAS) to Boise (BOI): On-Time Performance
Data through July 2026
When you fly LAS to BOI matters as much as anything else about the booking: the route swung from 91% on-time in October 2024 to just 55% in June 2026. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 68%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.3%
- Flights/day
- 3.7
- last 12 months
- Duration
- 1h 50m
- scheduled
- Distance
- 519 mi
Best airline from LAS to BOI
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 86% | 15 min | 0.0% | 71 |
| Spirit Airlines | 84% | 13 min | 1.1% | 373 |
| Southwest Airlines | 76% | 13 min | 0.1% | 2,155 |
| SkyWest Airlines | 75% | 19 min | 0.3% | 332 |
Monthly on-time trend
Best time to fly from LAS to BOI
Aim for departures around 8 a.m. (93% on-time); avoid 6 p.m. departures (40%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 16 min |
| Tuesday | 83% | 12 min |
| Wednesday | 85% | 8 min |
| Thursday | 73% | 18 min |
| Friday | 74% | 16 min |
| Saturdaybest | 86% | 6 min |
| Sunday | 72% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft52%
- Airline operations32%
- National airspace system12%
- Weather4%
Frequently asked questions
- How often are flights from LAS to BOI delayed?
- 23% of LAS–BOI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 14 minutes.
- Which airline is most reliable from LAS to BOI?
- Alaska Airlines has the best on-time record on this route at 86%, based on 71 flights. 4 airlines flew LAS–BOI frequently enough to compare in this period.
- What is the best time of day to fly from LAS to BOI?
- Departures around 8 a.m. have the best record (93% on-time), while departures around 6 p.m. have the worst (40%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAS to BOI?
- The scheduled LAS–BOI flight time averages 1h 50m over 519 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are LAS to BOI flights cancelled?
- 0.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from LAS to BOI?
- June 2026 was the roughest month in this dataset, with only 55% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 36-point gap is worth planning around.
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Based on 2,982 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.