How long is the flight from Washington, D.C. Dulles Intl Airport to Tongatapu?

There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Tongatapu in 45h. Fly via Air New Zealand to get the fastest option. The distance from Washington, D.C. Dulles Intl Airport to Tongatapu is about 7523 mi.

In terms of precipitation, rainfall in Tongatapu ranges from 3.7 - 8.3 inches per month. February is typically the wettest month, when rainfall can reach 8.3 in. June is typically the driest time to visit Tongatapu when rainfall is around 3.7 in.

If weather is an important factor for your trip to Tongatapu, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 71.6 F).

What is the cheapest time of day to fly from IAD to TT?

When flying from Washington, D.C. Dulles Intl Airport to Tongatapu, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Dulles Intl to Tongatapu that include hotel bookings?

Yes. In addition to deals on Dulles Intl to Tongatapu flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to Tongatapu?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Tongatapu.

Can I find deals for business class flights from Dulles Intl to Tongatapu?

Yes. Cheapflights offers flight deals from Dulles Intl to Tongatapu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$2,311+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Tongatapu

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Cheap flight deals from Dulles Intl to Tongatapu

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Cheapest flights from Dulles Intl to Tongatapu
Explore the most affordable flight options available from Dulles Intl to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

Wed 4/16:30 am

IAD

TBU

2 stops45h 00m

Air New Zealand

Wed 4/84:25 pm

TBU

IAD

2 stops43h 47m

Air New Zealand

Deal found 2/10

$2,311

Wed 4/16:25 pm

IAD

TBU

3 stops52h 05m

Multiple Airlines

Wed 4/84:25 pm

TBU

IAD

2 stops31h 12m

Multiple Airlines

Deal found 2/10

$11,676

Find flight deals from Dulles Intl to Tongatapu

Round-trip from	$2,311 (oojo)

From Washington, D.C. Dulles Intl to Tongatapu

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Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Wed 4/1

6:30 am-8:30 pm

2 stops45h 00m

Nuku‘alofa Fua'Amotu Intl

Wed 4/8

4:25 pm-7:12 pm

2 stops43h 47m

$2,311

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Wed 4/1

6:25 pm-3:30 pm

3 stops52h 05m

Nuku‘alofa Fua'Amotu Intl

Wed 4/8

4:25 pm-6:37 am

2 stops31h 12m

$11,676

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Deals found on 2/10

Best time to book a flight from Dulles Intl to Tongatapu

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IAD-TBU

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Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Tongatapu

IAD-TOTT

IAD-TBU

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Related info for your journey

How long is the flight from Washington, D.C. Dulles Intl Airport to Tongatapu?
There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Tongatapu in 45h. Fly via Air New Zealand to get the fastest option. The distance from Washington, D.C. Dulles Intl Airport to Tongatapu is about 7523 mi.
Can I find deals for flights from Dulles Intl to Tongatapu that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Tongatapu flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Tongatapu?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Tongatapu.
Can I find deals for business class flights from Dulles Intl to Tongatapu?
Yes. Cheapflights offers flight deals from Dulles Intl to Tongatapu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Tongatapu with Cheapflights

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Cheap flight deals from Dulles Intl to Tongatapu

Cheapest flights from Dulles Intl to Tongatapu
Explore the most affordable flight options available from Dulles Intl to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

Explore the most affordable flight options available from Dulles Intl to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

Best flights from Dulles Intl to Tongatapu
Discover carefully curated flight deals from Dulles Intl to Tongatapu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.

Discover carefully curated flight deals from Dulles Intl to Tongatapu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.

Find flight deals from Dulles Intl to Tongatapu

Keep the following information in mind while searching for Dulles Intl to Tongatapu flight deals. Data was last updated February 13, 2026.

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Best time to book a flight from Dulles Intl to Tongatapu

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Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Tongatapu

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Tongatapu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Washington, D.C. Dulles Intl Airport to Tongatapu?

Can I find deals for flights from Dulles Intl to Tongatapu that include hotel bookings?

How can I find direct flights from Dulles Intl to Tongatapu?

Can I find deals for business class flights from Dulles Intl to Tongatapu?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dulles Intl to Tongatapu

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Complete your trip to Tongatapu by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Dulles Intl to Tongatapu by cabin class

Find flights from Dulles Intl to Tongatapu, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dulles Intl and Tongatapu flights

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$2,311+ Cheap flights from Dulles Intl (IAD) to Tongatapu

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Tongatapu with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to Tongatapu

Cheapest flights from Dulles Intl to TongatapuExplore the most affordable flight options available from Dulles Intl to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

Explore the most affordable flight options available from Dulles Intl to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

Best flights from Dulles Intl to TongatapuDiscover carefully curated flight deals from Dulles Intl to Tongatapu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.

Discover carefully curated flight deals from Dulles Intl to Tongatapu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.

Find flight deals from Dulles Intl to Tongatapu

Keep the following information in mind while searching for Dulles Intl to Tongatapu flight deals. Data was last updated February 13, 2026.

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Tongatapu that are best for you.

Best time to book a flight from Dulles Intl to Tongatapu

Have a flexible travel schedule? Discover the best time to fly to Tongatapu from Dulles Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Tongatapu

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Tongatapu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Washington, D.C. Dulles Intl Airport to Tongatapu?

Can I find deals for flights from Dulles Intl to Tongatapu that include hotel bookings?

How can I find direct flights from Dulles Intl to Tongatapu?

Can I find deals for business class flights from Dulles Intl to Tongatapu?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Tongatapu

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Tongatapu by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Dulles Intl to Tongatapu by cabin class

Find flights from Dulles Intl to Tongatapu, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dulles Intl and Tongatapu flights

Browse other Dulles Intl and Tongatapu flight options. Last updated on February 13, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to Tongatapu
Explore the most affordable flight options available from Dulles Intl to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

Best flights from Dulles Intl to Tongatapu
Discover carefully curated flight deals from Dulles Intl to Tongatapu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.