Hilo International (ITO) Delays and On-Time Departures
Hilo, HI · ranked 44th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Hilo (ITO) had 6,609 scheduled departures and 85.4% of them left on time (US average 77.4%).
That ranks 44th of 333 US airports tracked on this site, with 1.0% of departures cancelled.
Among airlines at Hilo (ITO), Southwest Airlines left on time most often (93.2%).
Over 24 months, Tuesday was the most reliable day (90% on time) and March the worst month (85%).
Best time of day to fly out of Hilo (ITO)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 96.7% | 0.7% | 1,401 |
| 7am–8am | 95.2% | 0.3% | 930 |
| 8am–9am | 94.7% | 0.4% | 1,475 |
| 9am–10am | 91.9% | 1.4% | 790 |
| 10am–11am | 90.5% | 2.8% | 541 |
| 11am–12pm | 92.6% | 1.6% | 908 |
| 12pm–1pm | 88.3% | 1.6% | 816 |
| 1pm–2pm | 85.4% | 0.9% | 803 |
| 2pm–3pm | 83.5% | 0.5% | 189 |
| 3pm–4pm | 82.8% | 1.3% | 1,189 |
| 4pm–5pm | 79.3% | 0.8% | 892 |
| 5pm–6pm | 76.6% | 1.6% | 726 |
| 6pm–7pm | 86.4% | 0.6% | 1,204 |
| 7pm–8pm | 86.3% | 1.2% | 943 |
| 8pm–9pm | 78.8% | 1.4% | 220 |
| 9pm–10pm | 83.3% | 1.1% | 273 |
| 10pm–11pm | Limited data | 2 | |
Airlines at ITO ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Southwest Airlines | 93.2% | 94.1% | 0.7% | 1,833 |
| Hawaiian Airlines | 86.5% | 85.2% | 0.2% | 1,961 |
| Alaska Airlines | 79.4% | 75.5% | 1.7% | 2,815 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of ITO
On-time departures by day, 24 months.
Best month to fly out of ITO
On-time departures by month, 24 months.
Holiday travel at Hilo (ITO)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 88.5% | -0.0 pts | 0.4% | 244 |
| Christmas & New Year (Dec 20 - Jan 3) | 83.8% | -4.8 pts | 0.2% | 537 |
| Summer peak (Jun 15 - Aug 15) | 89.1% | +0.6 pts | 0.7% | 2,277 |
| All other days | 88.5% | — | 1.2% | 10,245 |
Monthly on-time departure trend at ITO
On-time departure % each month, with the 12-month US average for reference.
Routes from Hilo (ITO)
Every route from ITO with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| ITO → Honolulu (HNL) | 83.4% | 1.1% | 6,290 |
| ITO → Kahului (OGG) | 87.1% | 0.0% | 318 |