Route Reliability
Portland → Kailua-Kona
PDX–KOA · 2,607 miles · Portland International Airport to Ellison Onizuka Kona International Airport
- 84%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 0%
- Cancelled
- 360
- Flights in the data
Data through May 2026.
Alaska Airlines is the only airline in this data on this route, arriving on time 84% of the time across 360 flights. No comparison to make.
What the data says
Departure time hasn't mattered much.
On-time rates stay between 84% and 84% across the day.
Wednesday is the weak spot.
PDX–KOA flights arrived on time 90% of the time on Thursdays. On Wednesdays: 80%.
It basically never cancels.
Out of 360 scheduled flights, only 0.0% were cancelled.
Trending in the right direction.
PDX–KOA flights arrived on time 90% of the time over the last three months in the data, compared with 81% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon84%(50 flights)
- Tue83%(52 flights)
- Wed80%(50 flights)
- Thu90%(51 flights)
- Fri88%(51 flights)
- Sat83%(52 flights)
- Sun81%(52 flights)
- 6–9 AM84%(282 flights)
- 9 AM–12 PM84%(76 flights)
Jun 80% → May 97% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 25 |
| July 2025 | 87% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 73% | 30 |
| November 2025 | 73% | 30 |
| December 2025 | 77% | 30 |
| January 2026 | 87% | 31 |
| February 2026 | 79% | 28 |
| March 2026 | 74% | 31 |
| April 2026 | 100% | 30 |
| May 2026 | 97% | 31 |
Keep nerding
Based on 360 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.