ON TIMEBOARD
SMF Sacramento / KOA Kona

SMF → KOA on time

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

On time
87%
arrived < 15 min late
Cancelled
0.4%
522 flights
Typical arrival
−9 min
median vs schedule
When late
+45 min
average delay
Flights / day
1
3 airlines

87% of flights from Sacramento to Kona arrived on time over the past 12 months. That is better than the typical U.S. route. The 7 a.m. departures ran on time 90% of the time; the 10 a.m. ones 82%. Most reliable airline: Alaska Airlines (90%). 3% 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 SMF → KOA: when a flight was late, it was under 45 minutes late 75% of the time. About 1 in 47 flights landed an hour or more late, and 1 in 174 three hours or more; 0.4% 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 Airlines36586%0.3%−10 min2.5%+49 minSouthwest Airlines
Alaska Airlines10490%0.0%−5 min1.0%+28 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 SMF). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%7 a.m. departures: 90% on time (118 flights)907a8 a.m. departures: too few flights (39 flights)8a9 a.m. departures: 88% on time (231 flights)889a10 a.m. departures: 82% on time (134 flights)8210a
SMF → KOA, 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
9 a.m.88%
10 a.m.82%

By month

Each calendar month pooled over 2023–2026. Best: July (90%). Worst: August (88%).

40%70%100%Jan: too few flights (57 flights)JanFeb: too few flights (52 flights)FebMar: too few flights (85 flights)MarApr: too few flights (86 flights)AprMay: too few flights (91 flights)MayJun: too few flights (99 flights)JunJul: 90% on time (102 flights)90JulAug: 88% on time (102 flights)88AugSep: 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
Monday10691%0.9%
Tuesday52——
Wednesday10491%0.0%
Thursday52——
Friday52——
Saturday10483%1.0%
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) 63%Air traffic & airport (NAS) 24%Late inbound plane 12%Severe weather 1%

Cancellations: airline 1 · weather 1

Month by month

Not enough months with data to draw a trend.

Questions

How often are flights from SMF to KOA on time?

87% of 522 scheduled flights from Sacramento, CA to Kona, HI arrived within 15 minutes of schedule between September 2025 and August 2026. 0.4% were cancelled.

What is the best time of day to fly SMF to KOA?

Flights scheduled to leave at 7 a.m. were the most reliable (90% on time). The 10 a.m. departures were the least (82%).

Which airline is most on time from SMF to KOA?

Alaska Airlines: 90% of its 104 flights on the route arrived on time. Southwest Airlines: 86%.

What month has the most delays from SMF to KOA?

August (88% on time). The best month is July (90%), 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.