$1,349+ Cheap flights from Washington to Tonga
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TBU
Oct 19 — Oct 261
1 adult, Economy
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1. Tell us where you want to go
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington to Tonga
Keep the following information in mind while searching for Washington to Tonga flight deals. Data was last updated September 19, 2025.
Round-trip from | $1,349 (SmartFares) |
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Find flight deals from Washington to Tonga
Cheapest flights from Washington to TongaExplore the most affordable flight options available from Washington to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2025.
Explore the most affordable flight options available from Washington to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2025.
This SmartFares deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:59 pmSEA - TBU
2 stops57h 06mMultiple Airlines
Sat 11/84:25 pmTBU - SEA
2 stops25h 37mMultiple Airlines
Deal found 9/17![Multiple Airlines logo]()
$1,349
This KAYAK deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:23 amSEA - TBU
2 stops31h 02mMultiple Airlines
Mon 11/1011:20 amTBU - SEA
2 stops28h 37mMultiple Airlines
Deal found 9/18![Multiple Airlines logo]()
$1,405
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Tonga that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 19, 2025.
Use the filters below to find and compare flights from Washington to Tonga that are best for you.
Fly from
Washington
Fly to
Tonga
Route
Depart
Return
Price
SeattleNuku‘alofa
SEA - TBU
SEATBU
Seattle/Tacoma Intl
Sat 11/1
7:59 pm-1:05 am
2 stops57h 06m
Nuku‘alofa Fua'Amotu Intl
Sat 11/8
4:25 pm-9:02 pm
2 stops25h 37m
$1,349
SeattleNuku‘alofa
SEA - TBU
SEATBU
Seattle/Tacoma Intl
Wed 11/5
11:23 am-3:25 pm
2 stops31h 02m
Nuku‘alofa Fua'Amotu Intl
Mon 11/10
11:20 am-6:57 pm
2 stops28h 37m
$1,405
Best time to book a flight from Washington to Tonga
Have a flexible travel schedule? Discover the best time to fly to Tonga from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Tonga
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