May is the cheapest month to fly this route, with average fares around $464 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $464 | $362 | Best | |
| June 2026 | $521 | $362 | ||
| July 2026 | $544 | $439 | Peak | |
| August 2026 | $542 | $478 |
Departing on Tuesday offers the lowest average fares at $491. Saturday departures are the most expensive at $576, a difference of $85.
The best time to fly is May. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Seattle to Honolulu is May, with average round-trip fares around $464. The lowest fare found in May is $362.
Tuesday departures are the cheapest, averaging $491 round trip. The most expensive day is Saturday at $576.
Based on current pricing trends, booking for May travel offers the best value. Avoid July if possible, as fares average $544 compared to $464 in the cheapest month. August is a solid middle-ground option at $542.
Flying in May instead of July can save you approximately $80 per round trip. The cheapest month averages $464 while the most expensive averages $544.
Airlines, flight times, price calendar, and more for Seattle to Honolulu
View SEA → HNL Details