Best Time to Fly GEG to LAS: On-Time Stats by Hour & Airline
Spokane International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
855 flights were scheduled from Spokane (GEG) to Las Vegas (LAS) in the last 12 months, and 82.7% of those that flew arrived on time, 5.0 points above the US average of 77.6%.
Among 2 airlines, Southwest Airlines led with 86.4% on time and Allegiant Air was last with 55.8%.
Over 24 months, Wednesday was the most reliable day (94% on time) and August the worst month (82%).
The cancellation rate was 0.2% (US average 1.8%).
GEG 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 |
|---|---|---|---|---|
| Southwest Airlines | 86.4% | 46 min | 0.1% | 750 |
| Allegiant Air | 55.8% | 71 min | 0.9% | 105 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GEG to LAS
On-time arrival % by scheduled departure hour (local time), 1,702 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 97.4% | 0.5% | 195 |
| 6am–7am | 96.3% | 0.0% | 350 |
| 7am–8am | 95.4% | 0.0% | 108 |
| 8am–9am | Limited data | 20 | |
| 9am–10am | 81.1% | 0.0% | 106 |
| 10am–11am | 90.6% | 0.0% | 32 |
| 11am–12pm | 85.9% | 0.0% | 64 |
| 12pm–1pm | 75.0% | 0.0% | 44 |
| 1pm–2pm | 86.7% | 0.0% | 121 |
| 2pm–3pm | 79.4% | 1.0% | 201 |
| 3pm–4pm | 77.7% | 0.0% | 157 |
| 4pm–5pm | 72.7% | 0.0% | 55 |
| 5pm–6pm | 79.4% | 0.0% | 136 |
| 6pm–7pm | Limited data | 14 | |
| 7pm–8pm | Limited data | 9 | |
| 8pm–9pm | 43.3% | 3.2% | 31 |
| 9pm–10pm | 62.7% | 0.0% | 59 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GEG 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) | 82.3% | -4.4 pts | 0.0% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.6% | -15.1 pts | 0.0% | 74 |
| Summer peak (Jun 15 - Aug 15) | 83.6% | -3.1 pts | 0.0% | 282 |
| All other days | 86.8% | — | 0.3% | 1,312 |
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).