$651 Cheap Flights from Seattle (SEA) to Nuku'alofa (TBU)

View $651 flight on Wed, Feb 25, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Nuku'alofa (TBU-Fua'amotu Intl.)

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Cheap Flights from Seattle to Nuku'alofa (SEA-TBU)

Prices were available within the past 7 days and start at $651 for one-way flights and $1,272 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Nov 11 - Wed, Dec 3
SEA
Seattle
TBU
Tongatapu Island
$1,272 Roundtrip, found 4 days ago
$1,272
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Nov 11 from Seattle to Tongatapu Island, returning Wed, Dec 3, priced at $1,272 found 4 days ago
Alaska Airlines
Tue, Nov 11 - Wed, Dec 3
SEA
Seattle
TBU
Tongatapu Island
$1,284 Roundtrip, found 4 days ago
$1,284
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Nov 11 from Seattle to Tongatapu Island, returning Wed, Dec 3, priced at $1,284 found 4 days ago
Alaska Airlines
Tue, Nov 11 - Wed, Dec 3
SEA
Seattle
TBU
Tongatapu Island
$1,289 Roundtrip, found 17 hours ago
$1,289
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Tue, Nov 11 from Seattle to Tongatapu Island, returning Wed, Dec 3, priced at $1,289 found 17 hours ago
Alaska Airlines
Wed, Mar 4 - Wed, Mar 25
SEA
Seattle
TBU
Tongatapu Island
$1,295 Roundtrip, found 13 hours ago
$1,295
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Wed, Mar 4 from Seattle to Tongatapu Island, returning Wed, Mar 25, priced at $1,295 found 13 hours ago
Alaska Airlines
Tue, Nov 11 - Wed, Dec 3
SEA
Seattle
TBU
Tongatapu Island
$1,302 Roundtrip, found 17 hours ago
$1,302
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Tue, Nov 11 from Seattle to Tongatapu Island, returning Wed, Dec 3, priced at $1,302 found 17 hours ago
Alaska Airlines
Tue, Nov 11 - Wed, Dec 3
SEA
Seattle
TBU
Tongatapu Island
$1,308 Roundtrip, found 2 days ago
$1,308
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Nov 11 from Seattle to Tongatapu Island, returning Wed, Dec 3, priced at $1,308 found 2 days ago
Alaska Airlines
Tue, Nov 11 - Wed, Dec 3
SEA
Seattle
TBU
Tongatapu Island
$1,323 Roundtrip, found 4 days ago
$1,323
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Nov 11 from Seattle to Tongatapu Island, returning Wed, Dec 3, priced at $1,323 found 4 days ago
Alaska Airlines
Wed, Mar 4 - Wed, Mar 25
SEA
Seattle
TBU
Tongatapu Island
$1,326 Roundtrip, found 13 hours ago
$1,326
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Wed, Mar 4 from Seattle to Tongatapu Island, returning Wed, Mar 25, priced at $1,326 found 13 hours ago
Fiji Airways
Wed, Mar 4 - Wed, Mar 25
SEA
Seattle
TBU
Tongatapu Island
$1,341 Roundtrip, found 13 hours ago
$1,341
Roundtrip
found 13 hours ago
Select Fiji Airways flight, departing Wed, Mar 4 from Seattle to Tongatapu Island, returning Wed, Mar 25, priced at $1,341 found 13 hours ago
Air New Zealand
Mon, Nov 24 - Mon, Dec 8
SEA
Seattle
TBU
Tongatapu Island
$1,511 Roundtrip, found 6 days ago
$1,511
Roundtrip
found 6 days ago
Select Air New Zealand flight, departing Mon, Nov 24 from Seattle to Tongatapu Island, returning Mon, Dec 8, priced at $1,511 found 6 days ago

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU) cost?
Get a cheap one-way flight from $651 or cheap return flight from $1,272 from Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU)?
The cheapest month to fly from SEA to TBU is November, when demand is low. Off-peak months are usually when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SEA to TBU flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to TBU?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on various factors, including the time of year and airline.*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 Fua'amotu Intl. Airport (TBU)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU) route, fly before 3 PM. Later departures have a 22% higher chance of being 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 Fua'amotu Intl. Airport (TBU) last-minute?
Last-minute fares from SEA to TBU are typically more expensive. For the cheapest rates, start searching for flights early. That being said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before you leave.
Is it cheaper to book a SEA to TBU flight and hotel package?
You can save money by booking a SEA to TBU flight and hotel package compared to booking separately. In fact, travelers 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, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Fua'amotu Intl. Airport (TBU)?
Typically, you can cancel or modify your SEA to TBU flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you want more details, head to our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Fua'amotu Intl.
Airlines serving
Air New Zealand, Fiji Airways
Roundtrip price
$1,271
Distance
5766 mi

Book with confidence

Seattle to Nuku'alofa Flights

The cheapest times to fly from Seattle to Nuku'alofa

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 Nuku'alofa are during the month of November. You can find some of the cheapest flights from Seattle to Nuku'alofa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Nuku'alofa

Sunday is one of the best days to book for cheap flights from Seattle to Nuku'alofa: 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 Nuku'alofa

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 Nuku'alofa in 2025. You can also book with separate airlines for your outbound and return journeys, from $651 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 Nuku'alofa 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 Nuku'alofa 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.

 

Seattle to Nuku'alofa Flights
*Available to One Key members.