Best Time to Fly BOI to LAS: On-Time Stats by Hour & Airline
Boise Air Terminal → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
1,363 flights were scheduled from Boise (BOI) to Las Vegas (LAS) in the last 12 months, and 81.1% of those that flew arrived on time, 3.5 points above the US average of 77.6%.
Among 4 airlines, Alaska Airlines led with 91.5% on time and Spirit Airlines was last with 61.5%.
Over 24 months, Tuesday was the most reliable day (90% on time) and September the worst month (78%).
The cancellation rate was 0.2% (US average 1.8%).
BOI to LAS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlines | 91.5% | 86 min | 0.0% | 71 |
| SkyWest Airlines | 82.5% | 54 min | 0.0% | 188 |
| Southwest Airlines | 81.3% | 54 min | 0.3% | 1,051 |
| Spirit Airlines | 61.5% | 72 min | 0.0% | 39 |
| Allegiant Air | Limited data | 14 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOI to LAS
On-time arrival % by scheduled departure hour (local time), 2,827 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 100.0% | 0.0% | 66 |
| 6am–7am | 97.4% | 0.3% | 610 |
| 7am–8am | 96.2% | 1.3% | 79 |
| 8am–9am | 96.6% | 0.0% | 59 |
| 9am–10am | Limited data | 10 | |
| 10am–11am | Limited data | 25 | |
| 11am–12pm | 84.9% | 0.0% | 278 |
| 12pm–1pm | 82.8% | 0.0% | 273 |
| 1pm–2pm | 71.5% | 0.4% | 240 |
| 2pm–3pm | 72.8% | 0.0% | 151 |
| 3pm–4pm | 82.5% | 1.0% | 104 |
| 4pm–5pm | 86.6% | 0.0% | 97 |
| 5pm–6pm | 76.1% | 0.0% | 197 |
| 6pm–7pm | 63.3% | 0.0% | 177 |
| 7pm–8pm | 74.4% | 0.7% | 279 |
| 8pm–9pm | 70.8% | 0.0% | 130 |
| 9pm–10pm | 62.5% | 0.0% | 40 |
| 10pm–11pm | Limited data | 12 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOI to LAS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 84.9% | +2.0 pts | 0.0% | 53 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.0% | -3.0 pts | 0.0% | 110 |
| Summer peak (Jun 15 - Aug 15) | 79.9% | -3.1 pts | 0.4% | 459 |
| All other days | 83.0% | — | 0.2% | 2,205 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).