Las Vegas (LAS) to Boise (BOI): On-Time Performance
Data through May 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 65% in May 2026. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 70%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.3%
- Flights/day
- 3.9
- last 12 months
- Duration
- 1h 51m
- scheduled
- Distance
- 519 mi
Best airline from LAS to BOI
5 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 86% | 15 min | 0.0% | 71 |
| Allegiant Air | 85% | 33 min | 0.0% | 60 |
| Spirit Airlines | 84% | 12 min | 1.4% | 433 |
| Southwest Airlines | 77% | 12 min | 0.1% | 2,065 |
| SkyWest Airlines | 75% | 19 min | 0.3% | 323 |
Monthly on-time trend
Best time to fly from LAS to BOI
Aim for departures around 12 p.m. (93% on-time); avoid 10 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 16 min |
| Tuesday | 84% | 12 min |
| Wednesday | 85% | 8 min |
| Thursday | 75% | 17 min |
| Friday | 74% | 16 min |
| Saturdaybest | 86% | 7 min |
| Sunday | 74% | 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 aircraft48%
- Airline operations35%
- National airspace system13%
- Weather5%
Frequently asked questions
- How often are flights from LAS to BOI delayed?
- 22% of LAS–BOI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. 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. 5 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 12 p.m. have the best record (93% on-time), while departures around 10 p.m. have the worst (52%). 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 51m over 519 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are LAS to BOI flights cancelled?
- 0.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from LAS to BOI?
- May 2026 was the roughest month in this dataset, with only 65% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 2,952 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.