Best Time to Fly LAS to PDX: On-Time Stats by Hour & Airline
Harry Reid International → Portland International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.0% of Las Vegas (LAS) to Portland (PDX) flights arrived on time (2,956 scheduled flights). That is 1.4 points above the national average of 77.6%.
Spirit Airlines was the most punctual of the 4 airlines on the route at 88.4%, while Southwest Airlines trailed at 72.9%.
February has been the best month (86% on time) and Thursday the weakest day of the week (75%).
0.6% of flights were cancelled, versus 1.8% nationally.
LAS to PDX 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 | 88.4% | 51 min | 0.0% | 70 |
| Alaska Airlines | 83.5% | 56 min | 0.6% | 1,557 |
| Frontier Airlines | 75.1% | 57 min | 3.4% | 179 |
| Southwest Airlines | 72.9% | 53 min | 0.2% | 1,150 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to PDX
On-time arrival % by scheduled departure hour (local time), 6,567 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 25 | |
| 6am–7am | 91.0% | 0.8% | 401 |
| 7am–8am | 92.3% | 0.9% | 816 |
| 8am–9am | 89.3% | 0.0% | 235 |
| 9am–10am | 87.8% | 0.0% | 262 |
| 10am–11am | 82.6% | 1.0% | 383 |
| 11am–12pm | 86.7% | 0.3% | 598 |
| 12pm–1pm | 88.3% | 0.8% | 241 |
| 1pm–2pm | 78.5% | 0.0% | 135 |
| 2pm–3pm | 76.8% | 0.5% | 651 |
| 3pm–4pm | 76.4% | 0.3% | 332 |
| 4pm–5pm | 73.9% | 0.0% | 310 |
| 5pm–6pm | 68.0% | 1.1% | 348 |
| 6pm–7pm | 73.5% | 0.6% | 654 |
| 7pm–8pm | 78.2% | 0.0% | 165 |
| 8pm–9pm | 74.2% | 0.0% | 334 |
| 9pm–10pm | 71.5% | 0.7% | 421 |
| 10pm–11pm | 60.6% | 0.8% | 256 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS to PDX
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% | +0.8 pts | 0.0% | 119 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.3% | -8.3 pts | 0.0% | 262 |
| Summer peak (Jun 15 - Aug 15) | 75.8% | -5.7 pts | 0.6% | 1,169 |
| All other days | 81.5% | — | 0.6% | 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).