ON TIMEBOARD
KOA Kona / SMF Sacramento

KOA → SMF on time

Ellison Onizuka Kona at Keāhole (Kona, HI) to Sacramento (Sacramento, CA). Every scheduled flight, September 2025 to August 2026.

On time
88%
arrived < 15 min late
Cancelled
0.0%
522 flights
Typical arrival
−9 min
median vs schedule
When late
+57 min
average delay
Flights / day
1
3 airlines

88% of flights from Kona to Sacramento arrived on time over the past 12 months. That is better than the typical U.S. route. Most reliable airline: Southwest Airlines (91%). 4% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for KOA → SMF: when a flight was late, it was under 45 minutes late 63% of the time. About 1 in 27 flights landed an hour or more late, and 1 in 104 three hours or more; 0.0% were cancelled outright.

Share of all 522 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Southwest Airlines36591%0.0%−12 min4.4%+79 minSouthwest Airlines
Alaska Airlines10480%0.0%+1 min1.9%+34 minAlaska Airlines
Hawaiian Airlines53—————Hawaiian Airlines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at KOA). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%9 a.m. departures: too few flights (72 flights)9a10 a.m. departures: 92% on time (335 flights)9210a11 a.m. departures: too few flights (55 flights)11anoon departures: too few flights (59 flights)12p
KOA → SMF, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

By airline and hour

DepartsSouthwest Airlines
10 a.m.92%

By month

Each calendar month pooled over 2023–2026. Best: July (91%). Worst: August (90%).

40%70%100%Jan: too few flights (57 flights)JanFeb: too few flights (52 flights)FebMar: too few flights (84 flights)MarApr: too few flights (86 flights)AprMay: too few flights (91 flights)MayJun: too few flights (99 flights)JunJul: 91% on time (102 flights)91JulAug: 90% on time (102 flights)90AugSep: too few flights (56 flights)SepOct: too few flights (57 flights)OctNov: too few flights (56 flights)NovDec: too few flights (58 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday10686%0.0%
Tuesday52——
Wednesday10488%0.0%
Thursday52——
Friday52——
Saturday10485%0.0%
Sunday52——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Airline (crew, maintenance, ops) 67%Air traffic & airport (NAS) 20%Late inbound plane 12%Severe weather 1%

Month by month

Not enough months with data to draw a trend.

Questions

How often are flights from KOA to SMF on time?

88% of 522 scheduled flights from Kona, HI to Sacramento, CA arrived within 15 minutes of schedule between September 2025 and August 2026. 0.0% were cancelled.

Which airline is most on time from KOA to SMF?

Southwest Airlines: 91% of its 365 flights on the route arrived on time. Alaska Airlines: 80%.

What month has the most delays from KOA to SMF?

August (90% on time). The best month is July (91%), over 2023–2026.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.