Best Time to Fly HNL to SEA: On-Time Stats by Hour & Airline
Daniel K Inouye International → Seattle/Tacoma International
Data through July 2026 · Last updated October 18, 2026
2,937 flights were scheduled from Honolulu (HNL) to Seattle (SEA) in the last 12 months, and 75.4% of those that flew arrived on time, 2.2 points below the US average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 90.0%, while Hawaiian Airlines trailed at 66.5%.
September has been the best month (82% on time) and Sunday the weakest day of the week (76%).
0.9% of flights were cancelled, versus 1.8% nationally.
HNL to SEA 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 |
|---|---|---|---|---|
| Delta Air Lines | 90.0% | 88 min | 1.0% | 789 |
| Alaska Airlines | 71.4% | 61 min | 0.9% | 1,545 |
| Hawaiian Airlines | 66.5% | 88 min | 0.7% | 603 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HNL to SEA
On-time arrival % by scheduled departure hour (local time), 5,962 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 86.0% | 0.5% | 418 |
| 8am–9am | 81.2% | 1.6% | 438 |
| 9am–10am | Limited data | 18 | |
| 10am–11am | 68.9% | 0.3% | 303 |
| 11am–12pm | 75.0% | 0.6% | 170 |
| 12pm–1pm | 71.0% | 1.3% | 457 |
| 1pm–2pm | 74.0% | 0.7% | 1,082 |
| 2pm–3pm | 68.1% | 0.8% | 401 |
| 3pm–4pm | 72.8% | 1.1% | 376 |
| 4pm–5pm | 73.2% | 1.0% | 98 |
| 5pm–6pm | Limited data | 18 | |
| 8pm–9pm | 79.4% | 0.0% | 102 |
| 9pm–10pm | 77.7% | 1.9% | 563 |
| 10pm–11pm | 92.4% | 1.3% | 684 |
| 11pm–12am | 78.0% | 0.4% | 834 |
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 SEA
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) | 81.5% | +2.9 pts | 0.0% | 109 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.9% | +0.3 pts | 1.1% | 279 |
| Summer peak (Jun 15 - Aug 15) | 71.5% | -7.0 pts | 1.2% | 985 |
| All other days | 78.6% | — | 0.9% | 4,589 |
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).