The cheapest times to fly from ITO to SEA are

  • January 8th to February 18th (except the week of February 5th)
  • May 7th to May 20th
  • July 30th to December 9th (except the week of November 26th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ITO to SEA is late September. Prices can be as high as $1165 for Saturday flights during early April, or as low as $461 for Tuesday flights around late September.


When to Fly to Seattle

Flying from Hilo, HI (ITO) to Seattle, WA (SEA) will usually cost between $495 to $969 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late September with an average ticket price of $487. Due to high demand the most expensive time to fly is early April, with an average price of $936. Planning your trip to low-cost times can easily save you $449 on economy flights and even more on first-class flights. Generally, any price below $691 can be considered a good price for a round-trip ITO to SEA flight.

See below for a graph of average weekly prices for the ITO to SEA route. All prices are for round-trip tickets in USD.

ITO to SEA Flight Prices

Compared to other flights, the ITO to SEA flight is cheaper than the average and costs less than the average flight leaving from Hilo. The average price per mile (for a direct flight) is $0.16, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $125 (16%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $641. Return trip prices are from the SEA to ITO flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ITO to SEA can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 5 hour 45 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from ITO to SEA while comparing.

Destination alternative #1: Portland International Airport (PDX) in Portland, OR

  • 129 miles (208 km) away from SEA
  • Usually 1.81% less expensive than SEA
  • 1-layover flights available

See ITO to PDX flights


Flight Hacking ITO to SEA

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ITO to SEA — but Champion Traveler does!

Hack #1: Honolulu, HI (ITO > HNL > SEA)

  • Price for both tickets: $604
  • Average savings: $87 (12.53%)

See ITO to HNL flights


Flight Questions Answered

Still have questions about flying from ITO to SEA? We’ve got answers.

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Alaska, American, Delta, Hawaiian, Southwest, United, and potentially more during busy seasons.

How far away is it from Seattle/Tacoma International Airport to Hilo International Airport?

The distance between the two airports is roughly 2650 miles or 4265 kilometers.

How long does it take to fly from ITO to SEA?

The real-world flight time for a nonstop ITO to SEA flight is about 5 hour 45 minutes.

How many flights go between Hilo, HI and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 84 available flights from ITO to SEA.


Airport Location Info


Departing Airport

Origination codeITO
Origination airport nameHilo International Airport
CityHilo, HI
Countrythe United States

Return Airport

Destination codeSEA
Destination airport nameSeattle/Tacoma International Airport
CitySeattle, WA
Countrythe United States


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.