Kona to Seattle

What the Data Says About KOA to SEA

The Kona to Seattle corridor (KOA → SEA) covers roughly 2,688 miles and is served by 3 carriers, based on Bureau of Transportation Statistics reporting. Across 7,238 flights in the dataset, this route posts a 83.6% on-time rate with an average delay of 68.5 minutes when flights run late. Over the most recent 24 months of BTS data, 2,809 flights were recorded on this pairing — 67 cancelled (2.4%) and 4 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 3 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 7,238 total flights analyzed, the 83.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 68.5-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Nov 2024 posted the best performance on this corridor at 93% on-time, while May 2024 came in at 79% on-time — a 13-point gap between best and worst recent month. For travelers evaluating the KOA to SEA route, the combination of a 83.6% on-time rate, 68.5-minute average delay, 2.4% recent cancellation rate, and 3 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.