Cheap flights from Kahului to Seattle from $128

In general, October is the cheapest month to fly from Kahului to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $398. If you don’t want to visit Seattle in October, then you should wait until January to fly from Kahului, when ticket prices are also cheap, with an average price of $403.

On average, the least expensive day to fly to Seattle from Kahului is on a Sunday. momondo users have found tickets for Sunday departures for as low as $539. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Kahului because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $578.

Flying to Seattle from Kahului in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $493 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $601. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Kahului to Seattle/Tacoma Intl for the best Kahului - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Kahului when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $524 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Kahului for as low as $388 on momondo.

There are 4 cabin classes available to choose from on Kahului to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 9% on your flight if you consider stops on a Kahului to Seattle flight.

As of February 2026, prices for Kahului to Seattle flights are approximately 27% more expensive when compared to flights at the same time last year.

United Airlines is the most popular carrier operating from Kahului to Seattle/Tacoma Intl

Alaska Airlines, Hawaiian Airlines and Delta are the top three most popular airlines that fly to Seattle from Kahului according to our data. Alaska Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

The number of flights available between Kahului and Seattle is 12 per day as of February 2026. The most frequent departure time is 10:00PM, with 50% of daily flights leaving in the evening.

90 flights are operational weekly from Kahului to Seattle as of February 2026. The most popular departure day for this route is Wed, with 18% of flights per week taking off on this day.