Delta Air Lines is the most reliable airline on the SEA to LIH route with a 83% on-time rate, compared to Alaska Airlines at 76%. Based on 1,277 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SEA to LIH
Seattle to Kauai — airline reliability comparison
On-Time Rate by Airline
Delta Air Lines83%
Alaska Airlines76%
SEA to LIH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 83% | 1.1% | 63m | 1,277 |
| Alaska AirlinesASWorst | 76% | 0.3% | 49m | 2,450 |
Route Overview
78%
Overall On-Time
53m
Avg Delay
0.6%
Cancel Rate
3,727
Total Flights
Flying out of SEA? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.