89% of KOA → SEA flights arrived on time in June-August 2026 (345 flights). The most reliable was AS 513, on time 93% of the time on this route. Morning flights did best (93%), afternoon flights worst (83%). Kona (KOA): no delay reported. Seattle (SEA): no delay reported.
Best time of day to fly KOA → SEA
| Morning (before noon) | |
| Afternoon (noon-5 PM) | |
| Evening (after 5 PM) |
Flights KOA → SEA, most reliable first
| Flight | Departs | On time on this route | Cancelled |
|---|---|---|---|
| AS 513 Alaska Airlines | 8:03 AM | 2.2% | |
| AS 259 Alaska Airlines | 9:19 PM | 2.2% | |
| DL 485 Delta | 8:50 PM | 3.3% | |
| AS 205 Alaska Airlines | 1:18 PM | 1.1% |
KOA conditions · SEA conditions · SEA → KOA · Cancellations
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From BTS on-time data, June-August 2026; flights with 20+ trips on this route. On-time rates cover each flight number's whole day, which can include other legs. Departure times are local.