$504 Cheap Flights from Seattle (SEA) to Hamilton Island (HTI)

View $504 flight on Mon, Oct 20, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Hamilton Island, QLD (HTI-Great Barrier Reef)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Seattle to Hamilton Island (SEA-HTI)

Prices were available within the past 7 days and start at $504 for one-way flights and $1,114 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Oct 22 - Wed, Oct 29
SEA
Seattle
HTI
Hamilton Island
$1,114 Roundtrip, found 6 days ago
$1,114
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Oct 22 from Seattle to Hamilton Island, returning Wed, Oct 29, priced at $1,114 found 6 days ago
Air Canada
Wed, Oct 22 - Wed, Oct 29
SEA
Seattle
HTI
Hamilton Island
$1,130 Roundtrip, found 6 days ago
$1,130
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Oct 22 from Seattle to Hamilton Island, returning Wed, Oct 29, priced at $1,130 found 6 days ago
Air Canada
Wed, Oct 22 - Wed, Oct 29
SEA
Seattle
HTI
Hamilton Island
$1,130 Roundtrip, found 6 days ago
$1,130
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Oct 22 from Seattle to Hamilton Island, returning Wed, Oct 29, priced at $1,130 found 6 days ago
United
Mon, Oct 20 - Fri, Nov 7
SEA
Seattle
HTI
Hamilton Island
$1,143 Roundtrip, found 3 days ago
$1,143
Roundtrip
found 3 days ago
Select United flight, departing Mon, Oct 20 from Seattle to Hamilton Island, returning Fri, Nov 7, priced at $1,143 found 3 days ago
United
Mon, Oct 20 - Fri, Nov 7
SEA
Seattle
HTI
Hamilton Island
$1,150 Roundtrip, found 3 days ago
$1,150
Roundtrip
found 3 days ago
Select United flight, departing Mon, Oct 20 from Seattle to Hamilton Island, returning Fri, Nov 7, priced at $1,150 found 3 days ago
United
Mon, Oct 20 - Fri, Nov 7
SEA
Seattle
HTI
Hamilton Island
$1,152 Roundtrip, found 3 days ago
$1,152
Roundtrip
found 3 days ago
Select United flight, departing Mon, Oct 20 from Seattle to Hamilton Island, returning Fri, Nov 7, priced at $1,152 found 3 days ago
United
Mon, Oct 20 - Fri, Nov 7
SEA
Seattle
HTI
Hamilton Island
$1,157 Roundtrip, found 3 days ago
$1,157
Roundtrip
found 3 days ago
Select United flight, departing Mon, Oct 20 from Seattle to Hamilton Island, returning Fri, Nov 7, priced at $1,157 found 3 days ago
United
Mon, Oct 20 - Fri, Nov 7
SEA
Seattle
HTI
Hamilton Island
$1,159 Roundtrip, found 3 days ago
$1,159
Roundtrip
found 3 days ago
Select United flight, departing Mon, Oct 20 from Seattle to Hamilton Island, returning Fri, Nov 7, priced at $1,159 found 3 days ago
Hawaiian Airlines
Mon, Feb 23 - Fri, Feb 27
SEA
Seattle
HTI
Hamilton Island
$1,265 Roundtrip, found 2 days ago
$1,265
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Mon, Feb 23 from Seattle to Hamilton Island, returning Fri, Feb 27, priced at $1,265 found 2 days ago
Qatar Airways
Sun, Feb 15 - Tue, Feb 24
SEA
Seattle
HTI
Hamilton Island
$2,860 Roundtrip, found 6 days ago
$2,860
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sun, Feb 15 from Seattle to Hamilton Island, returning Tue, Feb 24, priced at $2,860 found 6 days ago
Flights from Seattle (SEA) to Hamilton Island (HTI)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Great Barrier Reef
Roundtrip price
$1,113
Distance
7187 mi

Seattle to Hamilton Island Flights

The cheapest times to fly from Seattle to Hamilton Island

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Hamilton Island are during the month of October. You can find some of the cheapest flights from Seattle to Hamilton Island with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Hamilton Island

Sunday is one of the best days to book for cheap flights from Seattle to Hamilton Island: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Hamilton Island

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Hamilton Island in 2025. You can also book with separate airlines for your outbound and return journeys, from $504 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Hamilton Island flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Hamilton Island airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI) cost?
Grab a cheap one-way flight from $504 or cheap return flight from $1,114 from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI)?
Planning your getaway for October is a great way to save, as it's the cheapest month for flights between SEA and HTI. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SEA to HTI. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI)?
There are no daily nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from SEA to HTI?
Typically you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can vary depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI)?
Choose a flight from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI) last-minute?
Last-minute fares from SEA to HTI are generally more expensive. For the cheapest rates, start searching for flights well ahead of time. That said, if your travel plans are flexible, it's possible to find a cheap fare right before you leave.
Is it cheaper to book a SEA to HTI flight and hotel package?
You'll typically save money by securing a SEA to HTI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've chosen your preferred accommodations and flights, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Great Barrier Reef Airport (HTI)?
If you booked your SEA to HTI flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Explore a world of travel with Expedia

*Available to One Key members.