Best Time to Fly SEA to HNL: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Daniel K Inouye International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 65.8% of Seattle (SEA) to Honolulu (HNL) flights arrived on time (2,933 scheduled flights). That is 11.8 points below the national average of 77.6%.
Among 3 airlines, Delta Air Lines led with 77.5% on time and Hawaiian Airlines was last with 61.2%.
Over 24 months, Saturday was the most reliable day (71% on time) and July the worst month (52%).
The cancellation rate was 0.9% (US average 1.8%).
SEA to HNL 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 | 77.5% | 54 min | 0.4% | 789 |
| Alaska Airlines | 61.6% | 66 min | 0.9% | 1,541 |
| Hawaiian Airlines | 61.2% | 94 min | 1.7% | 603 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to HNL
On-time arrival % by scheduled departure hour (local time), 5,954 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 70.3% | 1.1% | 751 |
| 8am–9am | 80.6% | 0.4% | 925 |
| 9am–10am | 70.7% | 1.9% | 210 |
| 10am–11am | 63.1% | 0.9% | 429 |
| 11am–12pm | 57.4% | 0.3% | 594 |
| 12pm–1pm | 67.1% | 0.9% | 215 |
| 1pm–2pm | 61.5% | 2.7% | 147 |
| 2pm–3pm | 78.5% | 0.0% | 116 |
| 3pm–4pm | 70.0% | 0.3% | 874 |
| 4pm–5pm | 71.6% | 0.6% | 337 |
| 5pm–6pm | 66.8% | 1.5% | 402 |
| 6pm–7pm | 70.2% | 1.1% | 474 |
| 7pm–8pm | 69.9% | 0.0% | 153 |
| 8pm–9pm | 49.8% | 0.7% | 309 |
| 9pm–10pm | Limited data | 18 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA to HNL
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) | 81.7% | +11.4 pts | 0.9% | 110 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.8% | +3.6 pts | 1.8% | 281 |
| Summer peak (Jun 15 - Aug 15) | 58.0% | -12.3 pts | 1.0% | 985 |
| All other days | 70.3% | — | 0.7% | 4,578 |
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).