Best Time to Fly PDX to KOA: On-Time Stats by Hour & Airline
Portland International → Ellison Onizuka Kona International at Keahole
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.0% of Portland (PDX) to Kona (KOA) flights arrived on time (365 scheduled flights). That is 8.3 points above the national average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Friday was the most reliable day (89% on time) and December the worst month (77%).
The cancellation rate was 0.0% (US average 1.8%).
PDX to KOA 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 | 86.0% | 42 min | 0.0% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to KOA
On-time arrival % by scheduled departure hour (local time), 707 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 85.7% | 0.0% | 533 |
| 8am–9am | 90.8% | 0.0% | 98 |
| 9am–10am | 86.7% | 0.0% | 45 |
| 10am–11am | 80.7% | 0.0% | 31 |
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 KOA
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) | Limited data | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 80.0% | -5.7 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 90.3% | +4.7 pts | 0.0% | 124 |
| All other days | 85.7% | — | 0.0% | 539 |
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).