Seattle (SEA) to Honolulu (HNL): On-Time Performance
Data through July 2026
The calendar drives reliability on SEA–HNL. November 2024 flights landed on schedule 83% of the time, but July 2025 dropped to 50% — a gap of 32 points. Across the full period the route averages 69% on-time against a national 78%.
- On-time
- 69%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 8.0
- last 12 months
- Duration
- 6h 16m
- scheduled
- Distance
- 2,677 mi
Best airline from SEA to HNL
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 79% | 15 min | 0.7% | 1,656 |
| Alaska Airlines | 67% | 20 min | 0.7% | 3,183 |
| Hawaiian Airlines | 59% | 32 min | 1.2% | 1,363 |
Monthly on-time trend
Best time to fly from SEA to HNL
Aim for departures around 8 a.m. (81% on-time); avoid 8 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 69% | 19 min |
| Tuesday | 69% | 22 min |
| Wednesday | 71% | 18 min |
| Thursday | 70% | 20 min |
| Friday | 63% | 23 min |
| Saturdaybest | 71% | 23 min |
| Sunday | 69% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft18%
- Airline operations66%
- National airspace system13%
- Weather2%
- Security1%
Frequently asked questions
- How often are flights from SEA to HNL delayed?
- 31% of SEA–HNL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from SEA to HNL?
- Delta Air Lines has the best on-time record on this route at 79%, based on 1,656 flights. 3 airlines flew SEA–HNL frequently enough to compare in this period.
- What is the best time of day to fly from SEA to HNL?
- Departures around 8 a.m. have the best record (81% on-time), while departures around 8 p.m. have the worst (52%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SEA to HNL?
- The scheduled SEA–HNL flight time averages 6h 16m over 2,677 miles. Actual arrival times vary — flights on this route land 15+ minutes late 31% of the time.
- How often are SEA to HNL flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SEA to HNL?
- July 2025 was the roughest month in this dataset, with only 50% of arrivals on time. The best was November 2024 at 83%. If your dates are flexible, that 32-point gap is worth planning around.
Explore related pages
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Related guides
Based on 6,202 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.