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Route Reliability

Kailua-Kona → Portland

KOA–PDX · 2,607 miles · Ellison Onizuka Kona International Airport to Portland International Airport

81
Pretty Reliable
WanderNerd Reliability Score
74%
Arrive within 15 minutes
5 min
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 74% of the time across 360 flights. No comparison to make.

What the data says

The 3–6 PM departure wins.

KOA–PDX flights departing between 3–6 PM arrived on time 100% of the time, versus 68% between 12–3 PM.

Sunday scaries are real for this one.

KOA–PDX flights arrived on time 87% of the time on Tuesdays and just 66% on Sundays. That gap is worth planning around.

It basically never cancels.

Out of 360 scheduled flights, only 0.0% were cancelled.

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

On-time by weekday
  • Mon68%(50 flights)
  • Tue87%(52 flights)
  • Wed76%(50 flights)
  • Thu71%(51 flights)
  • Fri75%(51 flights)
  • Sat75%(52 flights)
  • Sun66%(53 flights)
On-time by departure window
  • 9 AM–12 PM86%(104 flights)
  • 12–3 PM68%(245 flights)
  • 3–6 PM100%(10 flights)
On-time trend by month
90%
May

Jun 54% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202554%24
July 202539%31
August 202561%31
September 202577%30
October 202568%31
November 202580%30
December 202581%31
January 202684%31
February 202689%28
March 202671%31
April 202690%30
May 202690%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.