$843+ Cheap flights from Dulles Intl (IAD) to Tonga
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — TBU
Mar 5 — Mar 121
1 adult, Economy
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1. Tell us where you want to go
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One-way
One-way flights from Dulles Intl to TongaSearch for one-way flight options from Dulles Intl to Tonga. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from Dulles Intl to Tonga. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Fiji Airways deal was found by Cheapflights users on 2/1. 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 Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:10 am
IAD
- TBU
2 stops35h 25m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$843
This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:15 am
IAD
- TBU
2 stops33h 30m
Air New Zealand
Deal found 2/1![Air New Zealand logo]()
$1,065
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:42 pm
IAD
- TBU
3 stops46h 53m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,166
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl 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 February 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Tonga that are best for you.
Fly from
Dulles Intl
Fly to
Tonga
Route
Depart
Return
Price
Washington, D.C.Nuku‘alofa
IAD - TBU
IADTBU
Washington, D.C. Dulles Intl
Wed 7/15
6:10 am-10:35 am
2 stops35h 25m
$843
Washington, D.C.Nuku‘alofa
IAD - TBU
IADTBU
Washington, D.C. Dulles Intl
Sat 5/23
8:15 am-10:45 am
2 stops33h 30m
$1,065
Washington, D.C.Nuku‘alofa
IAD - TBU
IADTBU
Washington, D.C. Dulles Intl
Sat 5/23
6:42 pm-10:35 am
3 stops46h 53m
$1,166
Best time to book a flight from Dulles Intl to Tonga
Have a flexible travel schedule? Discover the best time to fly to Tonga from Dulles Intl with our price prediction graph.
IAD-TBU
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, D.C. Dulles Intl Airport to Tonga
IAD-TO0
IAD-TBU
No data available for this route at this time. Please check back soon.