Airports › Kona (KOA) › May 2026
Airport month · May 2026
Ellison Onizuka Kona International at Keahole in May 2026
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In May 2026, reporting carriers scheduled 1,353 domestic departures from Ellison Onizuka Kona International at Keahole (KOA). 86.5% left less than 15 minutes late and 84.2% reached their destination on time; 1.0% were cancelled.
Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so KOA departures were 9.4 points above the national departure figure.
A year earlier, in May 2025, the airport had 1,329 departures with 92.6% leaving on time: a change of −6.1 points, with flights up 2%.
Flights arriving at KOA that month were on time 85.7% of the time (1,353 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 53%, air carrier 27% and national aviation system 19%.
- On time 84.2%
- Arrived 15+ minutes late 14.8%
- Cancelled 1.0%
- Diverted 0.1%
May 2026 against a year earlier, the airport's year and the nation
| Measure | May 2026 | May 2025 | KOA, 12 months to Jul 2026 | All reported flights, May 2026 |
|---|---|---|---|---|
| Departed on time | 86.5% | 92.6% | 85.7% | 77.1% |
| Arrived on time | 84.2% | 90.0% | 84.7% | 77.6% |
| Cancelled | 1.0% | 0.3% | 1.1% | 0.9% |
| Average departure delay (late minutes only) | 6.9 min | 8.6 min | 8.7 min | 16.0 min |
| Scheduled departures a day | 45 | 44 | 44 | 20,391 |
| Scheduled departures | 1,353 | 1,329 | 16,052 | 611,735 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AS Alaska Airlines | 827 | 61% | 79.6% | 4.5 min | 1.3% |
| WN Southwest Airlines | 243 | 18% | 95.9% | -10.1 min | 0.0% |
| UA United Airlines | 159 | 12% | 85.5% | -3.9 min | 1.3% |
| AA American Airlines | 62 | 5% | 90.3% | -4.4 min | 0.0% |
| DL Delta Air Lines | 62 | 5% | 90.3% | -8.6 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| KOA–HNL | Kona to Honolulu | 635 | 81.4% | 4.9 min | 1.7% |
| KOA–LAX | Kona to Los Angeles | 135 | 85.2% | -3.2 min | 0.0% |
| KOA–OGG | Kona to Kahului | 124 | 85.5% | 1.0 min | 0.0% |
| KOA–SEA | Kona to Seattle | 112 | 85.7% | -9.0 min | 0.0% |
| KOA–SFO | Kona to San Francisco | 104 | 76.9% | 3.4 min | 1.9% |
| KOA–SMF | Kona to Sacramento | 44 | 93.2% | -9.7 min | 0.0% |
| KOA–DEN | Kona to Denver | 31 | 100.0% | -21.5 min | 0.0% |
| KOA–LAS | Kona to Las Vegas | 31 | 93.5% | -15.6 min | 0.0% |
| KOA–LIH | Kona to Lihue | 31 | 96.8% | -0.8 min | 0.0% |
| KOA–PDX | Kona to Portland | 31 | 90.3% | -6.2 min | 0.0% |
| KOA–PHX | Kona to Phoenix | 31 | 93.5% | -5.6 min | 0.0% |
| KOA–SAN | Kona to San Diego | 31 | 80.6% | -7.1 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left KOA on time in May 2026?
86.5% of 1,353 scheduled domestic departures left less than 15 minutes late, and 84.2% reached their destination on time. The national figures that month were 77.1% and 77.6%.
How does that compare with a year earlier?
In May 2025, 92.6% of 1,329 departures left on time and 0.3% were cancelled, against 86.5% and 1.0% in May 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for KOA · methodology · corrections.