Hilo International Airport (ITO): Delays & On-Time Performance
Data through July 2026
Hilo International Airport (ITO) is a tale of two seasons: departures ran 95% on-time in August 2025 but sank to 79% in December 2025. Across the year it averages 89% against a national 78%, over roughly 18 departures a day to 3 destinations.
- Departures on-time
- 89%
- left <15 min late
- Avg dep delay
- 6 min
- Arrivals on-time
- 87%
- Cancelled
- 1.0%
- Destinations
- 3
- nonstop
- Airlines
- 3
Plan your departure from ITO
The choices most likely to improve your odds, based on this airport’s historical record.
- Best departure time
- Around 6 a.m.
- 97% on-time
- Best day to fly
- Tuesday
- 89% on-time
- Cancellation risk
- 1.0%
- below the US average
Monthly on-time trend
Best time of day to depart from ITO
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 88% | 6 min |
| Tuesdaybest | 89% | 5 min |
| Wednesday | 89% | 6 min |
| Thursday | 86% | 7 min |
| Friday | 83% | 10 min |
| Saturday | 88% | 7 min |
| Sunday | 89% | 6 min |
Busiest routes from ITO
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| ITO → HNL (Honolulu) | 6,290 | 87% | 7 min |
| ITO → OGG (Kahului) | 318 | 91% | 5 min |
Where flights into ITO come from
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| HNL (Honolulu) → ITO | 6,294 | 87% | 7 min |
| OGG (Kahului) → ITO | 316 | 78% | 11 min |
What causes delays at ITO
Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing ITO.
- Late-arriving aircraft63%
- Airline operations27%
- National airspace system6%
- Weather3%
Alternative airports near Hilo
Other airports within 120 miles, compared on departure reliability.
| Airport | Distance | On-time departures | Avg delay |
|---|---|---|---|
| KOA — Ellison Onizuka Kona International Airport at Keāhole | 65 mi | 88% | 9 min |
Compare the airport-level record first, then check the exact route you plan to book.
Airline performance at ITO
| Airline | On-time departures | Avg delay | Flights |
|---|---|---|---|
| Southwest Airlines | 95% | 3 min | 3,838 |
| Hawaiian Airlines | 89% | 6 min | 7,219 |
| Alaska Airlines | 79% | 11 min | 2,815 |
Frequently asked questions
- How often are flights delayed at ITO?
- 12% of departures from Hilo International Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 6 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from ITO?
- Flights scheduled around 6 a.m. depart on time 97% of the time at ITO, versus 77% around 5 p.m.. Booking before noon is the usual rule of thumb here.
- What is the worst month for delays at ITO?
- In this dataset, December 2025 was the weakest month at ITO, with 79% of departures on time.
- How often are flights cancelled at ITO?
- 1% of scheduled departures from ITO were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Related guides
Based on 13,872 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.