Route · SEA → KOA · 2020–2025 BTS data
Seattle to Kona
The SEA–KOA corridor (Seattle, WA → Kona, HI) runs ahead of the national average, served by 3 carriers across roughly 2,688 miles.
Data updated 2026-06-13
- 79.6%
- On-time
- +0.6 pts
- vs US avg
- 55 min
- Delay when late
- 7,238
- Flights
Cancelled
1.6%
Best Month
Jan 2025 90%
Worst Month
Jul 2025 58%
Distance
2,688 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 123 | 33 | 4 | 2 | DL,AS |
| Nov 2025 | 117 | 26 | 2 | 7 | AS,DL |
| Oct 2025 | 122 | 33 | 4 | 2 | AS,DL |
| Sep 2025 | 111 | 23 | 0 | 0 | DL,AS |
| Aug 2025 | 121 | 38 | 2 | 0 | AS,DL |
| Jul 2025 | 123 | 52 | 1 | 1 | AS,DL |
| Jun 2025 | 120 | 46 | 2 | 0 | AS,DL |
| May 2025 | 124 | 27 | 0 | 0 | AS,DL |
| Apr 2025 | 120 | 17 | 0 | 0 | AS,DL |
| Mar 2025 | 124 | 20 | 0 | 1 | AS,DL |
| Feb 2025 | 111 | 21 | 0 | 0 | AS,DL |
| Jan 2025 | 124 | 12 | 2 | 2 | AS,DL |
| Dec 2024 | 108 | 30 | 0 | 1 | AS,DL |
| Nov 2024 | 97 | 11 | 0 | 0 | AS,DL |
| Oct 2024 | 124 | 21 | 0 | 0 | AS,DL |
| Sep 2024 | 120 | 30 | 0 | 0 | AS,DL |
| Aug 2024 | 124 | 29 | 0 | 0 | AS,DL |
| Jul 2024 | 124 | 27 | 1 | 0 | AS,DL |
| Jun 2024 | 120 | 25 | 0 | 0 | AS,DL |
| May 2024 | 111 | 16 | 0 | 0 | AS,DL |
| Apr 2024 | 107 | 23 | 1 | 0 | AS,DL |
| Mar 2024 | 120 | 12 | 0 | 0 | AS,DL |
| Feb 2024 | 104 | 21 | 1 | 1 | AS,DL |
| Jan 2024 | 109 | 27 | 25 | 16 | AS,DL |
Cancellation Rate
1.6%
45 of 2,808 flights
Diversion Rate
1.2%
33 of 2,808 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Origin airport →KOA - Kona
Full on-time, delay-cause, and seasonal performance for Kona, HI.
Destination airport →Compare the two airports
See SEA and KOA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SEA–KOA.
Routes with a similar on-time rate
What the Data Says About SEA to KOA
7,238 tracked flights put the SEA to KOA pairing (Seattle to Kona) at a 79.6% on-time rate, squarely in line with the wider network. Delays that do occur run 54.6 minutes on average. Across the 2,688-mile route and its 3 carriers, the trailing 24 months show 1.6% cancelled and 1.2% diverted (2,808 flights sampled).
The monthly split is wide on this route: Jan 2025 posted the strongest performance at 90% on-time, while Jul 2025 came in at just 58% - a 33-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from SEA to KOA? ▼
What is the cancellation rate for SEA to KOA? ▼
How far is the flight from SEA to KOA? ▼
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Flight Guides
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.