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Flight Reliability

AS 561 · Alaska Airlines

Kailua-Kona → Los Angeles (KOA–LAX)97% of its flights flew this route. The rest (EUG–SEA) are included in these numbers.

81
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
5 min
Average arrival delay
0.8%
Cancelled
4 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

What the data says

3–6 PM has a slight edge.

Departures between 3–6 PM arrived on time 80% of the time, against 75% between 12–3 PM.

Thursdays have been rough.

AS 561 arrived on time 88% of the time on Saturdays and just 64% on Thursdays. That gap is worth planning around.

Lagging the KOA–LAX route.

AS 561 arrived on time 77% of the time, versus 87% across the KOA–LAX route.

A bit behind the Alaska Airlines network.

AS 561 arrived on time 77% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon81%(52 flights)
  • Tue75%(51 flights)
  • Wed84%(51 flights)
  • Thu64%(50 flights)
  • Fri77%(52 flights)
  • Sat88%(49 flights)
  • Sun72%(53 flights)
On-time by departure window
  • 12–3 PM75%(198 flights)
  • 3–6 PM80%(160 flights)
On-time trend by month
81%
May

Jun 67% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202571%31
August 202580%30
September 202597%30
October 202571%28
November 202568%28
December 202574%31
January 202671%31
February 202686%28
March 202670%30
April 202690%30
May 202681%31
Departures on time
66%
Diverted
0.3%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 362 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.