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Cheap flights from Washington, D.C. Dulles Intl Airport to Tongatapu from $740

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Tongatapu departing on 4/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Tongatapu

Cheap one-way flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:42 pm - 3:55 pm
IAD
-
TBU
29h 13m
2 stops
$740Multiple Airlines
Thu, Apr 30
Multiple Airlines Logo
7:10 am - 3:55 pm
IAD
-
TBU
39h 45m
3 stops
$1,134Multiple Airlines
Thu, Apr 30
Air New Zealand Logo
10:20 pm - 10:45 am
IAD
-
TBU
43h 25m
2 stops
$1,242Air New Zealand
Fri, May 1
Multiple Airlines Logo
1:20 pm - 10:35 am
IAD
-
TBU
52h 15m
3 stops
$1,500Multiple Airlines
Fri, May 1

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Tongatapu 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, momondo users made 832,500 searches. Data last updated April 2, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Tongatapu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way
Quickest one-way

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Thu 4/30

5:42 pm-3:55 pm

2 stops29h 13m

$740

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Thu 4/30

7:10 am-3:55 pm

3 stops39h 45m

$1,134

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Fri 5/1

10:20 pm-10:45 am

2 stops43h 25m

$1,242

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Fri 5/1

1:20 pm-10:35 am

3 stops52h 15m

$1,500

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Washington, D.C. Dulles Intl Airport to Tongatapu flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Tongatapu

Fastest flight time

35h 25m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Tongatapu takes 35h 25m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Tongatapu. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Tongatapu.
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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Tongatapu

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Tongatapu?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Tongatapu are refreshed on a daily basis.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Tongatapu?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Tongatapu.

  • What documentation or ID do you need to fly to Tongatapu?

    The travel and health documents you'll need for your trip to Tongatapu may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Tongatapu. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Tongatapu

  • How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to Tongatapu?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Washington, D.C. Dulles Intl Airport from Tongatapu. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Washington, D.C. Dulles Intl Airport to Tongatapu with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Tongatapu?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Tongatapu from Washington, D.C..

Can I find flights from Washington, D.C. to Tongatapu with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Tongatapu flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Tongatapu?

Once you have performed a search for Washington, D.C. to Tongatapu flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Tongatapu right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Tongatapu, momondo offers a useful price alert feature which will track prices for flights to Tongatapu from Washington, D.C. and alert you when they change.

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Sat 5/2
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