Best Time to Fly HNL to IAD: On-Time Stats by Hour & Airline
Daniel K Inouye International → Washington Dulles International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 81.9% of Honolulu (HNL) to Washington (IAD) flights arrived on time (168 scheduled flights). That is 4.2 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
January has been the best month (86% on time) and Sunday the weakest day of the week (78%).
4.2% of flights were cancelled, versus 1.8% nationally.
HNL to IAD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 81.9% | 86 min | 4.2% | 168 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HNL to IAD
On-time arrival % by scheduled departure hour (local time), 310 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 3pm–4pm | 84.5% | 4.3% | 116 |
| 4pm–5pm | 80.0% | 5.3% | 38 |
| 5pm–6pm | 82.2% | 2.6% | 156 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HNL to IAD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 2 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 76.7% | -7.3 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 80.4% | -3.6 pts | 4.2% | 48 |
| All other days | 84.0% | — | 3.9% | 230 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).