KOA to SLC flight delays & on-time performance
Nonstop flights from Ellison Onizuka Kona International Airport at Keāhole to Salt Lake City International Airport · 2,966 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at KOA or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Kona (KOA) to Salt Lake City (SLC) arrived on time 71% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3.1% were cancelled, and 3% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8pm did best (75% on time); around 7pm did worst (68%).
- Monday was the most reliable day to fly (81% on time) and Friday the least (56%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (62%).
Which airline is most on time from KOA to SLC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 71% | 3.1% | 14 min | 3.2% | 96 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7pm68%59 flights
- 8pm75%37 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%0.0% cancelled
- Tuesday71%0.0% cancelled
- Wednesday71%0.0% cancelled
- Thursday73%6.3% cancelled
- Friday56%0.0% cancelled
- Saturday69%5.9% cancelled
- Sunday75%5.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)62%
- Air traffic control & airport congestion22%
- Late-arriving aircraft16%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather67%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion0%
- Security0%
KOA to SLC: common questions
- How often are KOA to SLC flights on time?
- 71% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Kona to Salt Lake City cancelled?
- 3.1% of scheduled flights were cancelled (3 of 96).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 44 min behind schedule on average, and 3.2% of flights were an hour or more late.
- How long is taxi time at KOA?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to KOA — 71% on time
More flights from Kona
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: KOA → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.