Airport reliability
Hilo (ITO) on-time performance
How reliably flights leave Hilo, HI (ITO) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.
Hilo, HI6,603 departures in 12 months
- Departures on time
- 81.6% U.S. average 75.6%
- Cancelled
- 1.4% U.S. average 1.9%
- 60+ minutes late
- 3.2% U.S. average 8.1%
- Scheduled departures
- 6,603 12 months
What this means
ITO departures beat the U.S. average.
- 81.6% of the 6,603 scheduled departures from Hilo (ITO) arrived at their destination on time, 6.0 points higher than the U.S. average of 75.6%.
- 1.4% of departures were cancelled (U.S. average 1.9%), and 3.2% arrived an hour or more late.
- Flights arriving at ITO were on time 81.7% of the time.
- Among airlines with at least 300 departures, Southwest Airlines was the most punctual from ITO (93.2%) and Alaska Airlines the least (74.2%).
- Over the last 3 years, September was the most reliable month for departures from ITO (94.4% on time) and January the least reliable (81.6%).
- Cancellations peaked in August, when 3.4% of flights were cancelled.
- Flights scheduled to depart 6 am to 7 am were the most punctual (95.0% on time); flights scheduled to depart 5 pm to 6 pm were the least (61.9%).
Airlines at ITO
Ranked by on-time arrival
| Airline | On time | Cancelled | 60+ min late | Avg delay when late | Departures |
|---|---|---|---|---|---|
| Southwest Airlines | 93.2% | 1.0% | 1.6% | 61 min | 1,837 |
| Hawaiian Airlines | 83.3% | 0.3% | 2.1% | 36 min | 1,560 |
| Alaska Airlines | 74.2% | 2.2% | 4.6% | 43 min | 3,206 |
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On-time rate by departure hour
Share of scheduled flights on time ITO average 81.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | Insufficient sample | 1 |
| Departing 6 am to 7 am | 95.0% | 716 |
| Departing 7 am to 8 am | 93.0% | 473 |
| Departing 8 am to 9 am | 89.5% | 668 |
| Departing 9 am to 10 am | 81.8% | 379 |
| Departing 10 am to 11 am | 73.7% | 156 |
| Departing 11 am to noon | 88.3% | 511 |
| Departing noon to 1 pm | 73.4% | 304 |
| Departing 1 pm to 2 pm | 75.7% | 334 |
| Departing 2 pm to 3 pm | 77.3% | 194 |
| Departing 3 pm to 4 pm | 80.3% | 704 |
| Departing 4 pm to 5 pm | 64.2% | 371 |
| Departing 5 pm to 6 pm | 61.9% | 328 |
| Departing 6 pm to 7 pm | 82.4% | 698 |
| Departing 7 pm to 8 pm | 75.0% | 396 |
| Departing 8 pm to 9 pm | 78.9% | 180 |
| Departing 9 pm to 10 pm | 78.4% | 190 |
Best and worst months at ITO
Share of scheduled flights on time 12-month average 81.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 81.6% | 1,734 |
| February | 88.0% | 1,577 |
| March | 84.7% | 1,696 |
| April | 85.5% | 1,719 |
| May | 83.2% | 1,714 |
| June | 86.7% | 1,643 |
| July | 85.6% | 1,706 |
| August | 86.8% | 1,692 |
| September | 94.4% | 1,674 |
| October | 88.5% | 1,711 |
| November | 89.1% | 1,687 |
| December | 85.7% | 1,731 |
Month by month, last 12 months
Share of scheduled flights on time U.S. average 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 94.3% | 522 |
| Oct 2025 | 87.8% | 541 |
| Nov 2025 | 87.0% | 537 |
| Dec 2025 | 78.0% | 567 |
| Jan 2026 | 77.9% | 570 |
| Feb 2026 | 81.2% | 516 |
| Mar 2026 | 72.8% | 556 |
| Apr 2026 | 78.9% | 578 |
| May 2026 | 77.6% | 568 |
| Jun 2026 | 84.0% | 549 |
| Jul 2026 | 82.0% | 545 |
| Aug 2026 | 79.6% | 554 |
Busiest routes from ITO
| To | On time | Cancelled | Airlines | Flights |
|---|---|---|---|---|
| Honolulu (HNL) | 81.3% | 1.5% | 3 | 6,272 |
| Kahului (OGG) | 86.5% | 0.3% | 3 | 318 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic departures from Hilo, HI (ITO) by airlines that report to the DOT.
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.