Best Time to Fly PDX to LAS: On-Time Stats by Hour & Airline
Portland International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
2,956 flights were scheduled from Portland (PDX) to Las Vegas (LAS) in the last 12 months, and 80.5% of those that flew arrived on time, 2.9 points above the US average of 77.6%.
Among 4 airlines, Spirit Airlines led with 85.5% on time and Frontier Airlines was last with 72.1%.
Over 24 months, Saturday was the most reliable day (89% on time) and July the worst month (78%).
The cancellation rate was 0.5% (US average 1.8%).
PDX 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 |
|---|---|---|---|---|
| Spirit Airlines | 85.5% | 56 min | 0.0% | 70 |
| Alaska Airlines | 83.7% | 52 min | 0.4% | 1,557 |
| Southwest Airlines | 77.2% | 44 min | 0.2% | 1,150 |
| Frontier Airlines | 72.1% | 90 min | 3.9% | 179 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to LAS
On-time arrival % by scheduled departure hour (local time), 6,557 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 97.1% | 0.3% | 661 |
| 6am–7am | 97.2% | 0.0% | 107 |
| 7am–8am | 89.4% | 0.5% | 674 |
| 8am–9am | 96.0% | 0.0% | 100 |
| 9am–10am | 93.3% | 0.6% | 317 |
| 10am–11am | 82.2% | 0.8% | 871 |
| 11am–12pm | 84.0% | 0.8% | 378 |
| 12pm–1pm | 81.5% | 0.0% | 174 |
| 1pm–2pm | 72.8% | 0.5% | 198 |
| 2pm–3pm | 80.4% | 0.4% | 782 |
| 3pm–4pm | 73.8% | 0.0% | 164 |
| 4pm–5pm | 79.7% | 0.0% | 271 |
| 5pm–6pm | 75.0% | 0.5% | 629 |
| 6pm–7pm | 65.9% | 0.6% | 361 |
| 7pm–8pm | 77.0% | 0.4% | 270 |
| 8pm–9pm | 79.7% | 1.7% | 175 |
| 9pm–10pm | 74.5% | 0.8% | 392 |
| 10pm–11pm | 84.8% | 0.0% | 33 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PDX 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) | 87.6% | +4.0 pts | 0.0% | 113 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.9% | -12.7 pts | 0.4% | 262 |
| Summer peak (Jun 15 - Aug 15) | 79.3% | -4.4 pts | 0.5% | 1,165 |
| All other days | 83.6% | — | 0.5% | 5,017 |
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).