Route reliability record
KOA→HNL
Kailua-Kona to Honolulu
- Flights
- 7,227
- Period
- September 2025 to August 2026
- Distance
- 163 mi
- Carriers
- 3
This route lands a B, 7 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That rests on 7,227 KOA to HNL flights, of which Southwest Airlines flew 1,770 at 95.4% on time.
Best time to fly KOA to HNL: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 93.8% of the time and Tuesday flights 86.9%, against 83.8% for the route overall.
Southwest Airlines is the most reliable of the three carriers covered here at 95.4% on time across 1,770 flights.
Key figures
On time
83.8%
Arrivals under 15 minutes late, of 7,116 completed flights
Avg delay
46 min
Across delayed arrivals only, not all flights
Cancelled
1.52%
National rate is 1.89%
Best carrier
Southwest
95.4% on time across 1,770 flights
These figures cover 7,227 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
Which airline is most reliable on KOA to HNL
The choice of carrier is not cosmetic here. Southwest Airlines arrives on time 95.4% of the time; Alaska Airlines manages 77.6%. Sample sizes sit next to every figure, because a two-point gap across 3,697 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 1,770 | 95.4% | 63 min | 1.53% | A |
| Hawaiian Airlines | 1,760 | 85.2% | 46 min | 0.97% | A+ |
| Alaska Airlines | 3,697 | 77.6% | 45 min | 1.79% | B |
The spread between Southwest and Alaska is 18 points, wide enough that it should decide the booking. On a hundred trips that is 18 more arrivals inside the on-time window.
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Best ways to make this trip
The most reliable ways to fly Kailua-Kona to Honolulu
Every airline on this route, ranked by how often a scheduled flight actually operated and arrived on time, with its best departure time and most punctual flight number. No nearby airport pair beat these.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. KOA → HNLKailua-Kona to Honolulu | Southwest Airlines | 93.9% | 95.4% | 1.53% | 5am–8am, Tue | — |
| 2. KOA → HNLKailua-Kona to Honolulu | Hawaiian Airlines | 84.4% | 85.2% | 0.97% | 5am–8am, Sun | — |
| 3. KOA → HNLKailua-Kona to Honolulu | Alaska Airlines | 76.2% | 77.6% | 1.79% | 5am–8am, Tue | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 15 points, against 18 points between the best and worst carrier.
- 5am–8am846 flights93.8%
- 8am–11am1,135 flights88.6%
- 11am–2pm1,414 flights80.6%
- 2pm–5pm1,853 flights79.3%
- 5pm–8pm1,513 flights83.0%
- 8pm–5am466 flights84.5%
Scale runs 70% to 100%.
Book the early departure. Flights leaving between 5am–8am arrive on time 93.8% of the time, against 79.3% for the afternoon window. That is 15 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 1,853 flights scheduled in it.
Explore
Filter KOA to HNL by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On KOA to HNL, the best departure window is 5am–8am at 93.8% on time and the worst is 2pm–5pm at 79.3%, a wide gap of 14.5 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am93.8%
- 8–11am88.6%
- 11am–2pm80.6%
- 2–5pm79.3%
- 5–8pm83.0%
- 8pm–5am84.5%
best all US flightsScale 60% to 100%.
Across the year
When delays peak on this route
This route's year swings by 18 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
September is the best month on the calendar at 94.5% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. January was the busiest month here, with 650 flights.
Across the week, Tuesday is the strongest day at 86.9% on time and Friday the weakest at 79.1%, a spread of 8 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 60% of the 53,000 delay minutes carriers reported here, and the remaining four split what is left.
- 60%Late-arriving aircraft
- 27%Carrier
- 9%National Airspace System
- 4%Extreme weather
- 0%Security
60% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 53,000 reported delay minutes here, that single category outweighs weather by 13 to one. The split is drawn from 53,223 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 93.8% on time here.
Cancellations sit at 1.52% against a national 1.89%, which is ordinary. Diversions add another 0.01%.
Connections and stage length
What a delay here actually costs
Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.3% 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 163 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 5am–8am window matters as much as it does.
The return leg runs 85.3% on time across 7,226 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 7,227 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in HNL after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 94.5% on time and March 76.8%, a swing of 18 points. If the dates move at all, move them out of March before you think about anything else. 7,116 completed flights over 12 months sit behind that.
Common questions
KOA to HNL questions
How often is KOA to HNL delayed?
About one flight in six arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 16.2% of the 7,227 flights in this analysis, against 22.7% nationally. Delayed flights are late by roughly 45 minutes on average.
Which airline is most reliable on KOA to HNL?
Southwest Airlines leads at 95.4% on time across 1,770 flights. Alaska Airlines is at the other end on 77.6%, a gap of 18 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on KOA to HNL?
The 5am–8am departure window is the strongest at 93.8% on time. The 2pm–5pm window is the weakest at 79.3%, 15 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are March delays on KOA to HNL?
March is the weakest month at 76.8% on time, compared with 94.5% in September. Across the year that is 18 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- HNL to KOA — the return legseparate record
- Daniel K. Inouye International (HNL) delay statistics
- Southwest Airlines on KOA to HNL95.4%
- Hawaiian Airlines on KOA to HNL85.2%
- Alaska Airlines on KOA to HNL77.6%
- KOA to LAX, a related route86.5%
- OGG to HNL, a related route84.1%
- KOA to OGG, a related route86.9%
- Southwest Airlines on-time record95.4%
- Hawaiian Airlines on-time record85.2%
- Alaska Airlines on-time record77.6%
- Hawaii inter-island flights: how reliable is island hopping?
- Why the first flight of the morning is statistically safest
Direction matters. KOA to HNL and HNL to KOA are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.