Carrier route record
WNKOA→OGG
Southwest Airlines · Kailua-Kona to Kahului
- Flights
- 365
- Period
- July 2025 to June 2026
- Share of route
- 25%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Southwest Airlines.
Southwest on KOA to OGG earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 365 flights. The strongest carrier on the route with a full sample, Hawaiian Airlines, flew 552 at 90.0% on time.
Set against the rest of the country, Southwest's KOA to OGG record is 12 points better than the US average of 77.6%. That gap is worth roughly 123 fewer late arrivals for every thousand flights.
Key figures
On time
89.9%
Arrivals under 15 minutes late, of 365 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
Whole route
86.8%
Every carrier on KOA to OGG, 1,460 flights
These figures cover 365 flights between July 2025 and June 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
Southwest against every carrier on KOA to OGG
Southwest flew 365 of the 1,460 flights on KOA to OGG, about 25% of it. Its 89.9% on time is 3 points better than the route as a whole, which runs 86.8%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Hawaiian at 90.0% to Alaska at 81.4%.
The choice of carrier is not cosmetic here. Hawaiian Airlines arrives on time 90.0% of the time; Alaska Airlines manages 81.4%. Sample sizes sit next to every figure, because a two-point gap across 543 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Hawaiian Airlines | 552 | 90.0% | 40 min | 0.36% | A+ |
| Southwest Airlines (this page) | 365 | 89.9% | 63 min | 0.00% | A+ |
| Alaska Airlines | 543 | 81.4% | 38 min | 0.18% | B+ |
Hawaiian leads Alaska by 9 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
Departure window
When Southwest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 365 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm166 flights88.0%
- 2pm–5pm199 flights91.5%
- 5pm–8pm—
- 8pm–5am—
Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.
The 2pm–5pm window is the strongest at 91.5% on time. The full set of windows spans 4 points.
Across the year
Southwest on KOA to OGG through the year
July is the worst month at 77.4% on time, 19 points below May, the best at 96.8%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. January was the busiest month here, with 31 flights.
Across the week, Wednesday is the strongest day at 96.2% on time and Saturday the weakest at 78.8%. 17 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Southwest runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 64% of the 2,128 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 64%Late-arriving aircraft
- 25%Carrier
- 11%National Airspace System
64% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,128 reported delay minutes here, that single category outweighs weather by 64 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,128 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.0% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 84 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 2pm–5pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 86.0% on time across 365 flights, 4 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
One caution: this is a thin sample. 365 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Southwest on KOA to OGG
Put together: treat all of this as provisional. 365 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 89.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 365 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.