Seattle (SEA) to Lihue, Kauai (LIH) flights
Alaska Airlines, Delta Air Lines fly nonstop from Seattle-Tacoma International Airport to Lihue Airport, with about 21 flights a week in July 2026. The 2,700-mile flight takes about 6h 11m gate to gate.
- Distance
- 2,700 mi · 4,345 km
- Flight time
- 6h 11m
- Airlines
- 2
- Seats filled
- 84%
Airlines flying SEA to LIH
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Alaska Airlines | 14 | Boeing 737-800, Boeing 737 MAX 8, Boeing 737 MAX 9 | 95,275 | 6h 13m |
| Delta Air Lines | 7 | Airbus A321, Boeing 757-200 | 60,496 | 6h 7m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SEA to LIH flight schedule
3 flight numbers flew this route in August 2026, 3 of them almost daily. The first usually leaves at 11:28am and the last at 6:13pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| AS 258Alaska Airlines | 11:28am | 2:40pm | 31 | 67% |
| DL 345Delta Air Lines | 4:05pm | 7:16pm | 31 | 75% |
| AS 237Alaska Airlines | 6:13pm | 9:25pm | 30 | 76% |
Is SEA to LIH on time?
From September 2025 to August 2026, 73% of 1,094 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 2pm were the most punctual (78%), those around 11am the least (64%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (42%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 729 | 72% | 16 min | 0.3% |
| Delta Air Lines | 365 | 75% | 19 min | 1.6% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 9am to 10am | 82 | 74% | |
| 10am to 11am | 62 | 77% | |
| 11am to 12pm | 209 | 64% | |
| 2pm to 3pm | 95 | 78% | |
| 3pm to 4pm | 225 | 74% | |
| 4pm to 5pm | 43 | 77% | |
| 5pm to 6pm | 99 | 72% | |
| 6pm to 7pm | 251 | 76% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 93 | 13,414 | |
| September 2025 | 89 | 11,941 | |
| October 2025 | 92 | 13,552 | |
| November 2025 | 88 | 12,639 | |
| December 2025 | 88 | 13,085 | |
| January 2026 | 93 | 13,793 | |
| February 2026 | 83 | 12,779 | |
| March 2026 | 87 | 13,227 | |
| April 2026 | 90 | 12,703 | |
| May 2026 | 94 | 12,956 | |
| June 2026 | 90 | 13,187 | |
| July 2026 | 93 | 12,495 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.