Cheap flights from Washington, D.C. to Tonga from $673

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. to Tonga departing on 8/10. 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
0 bags

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Find the cheapest flights from Washington, D.C. to Tonga

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:25 pm - 3:55 pm
DCA
-
TBU
31h 30m
2 stops
Multiple Airlines Logo
5:40 am - 11:00 pm
TBU
-
DCA
34h 20m
2 stops
$1,909Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
Multiple Airlines Logo
7:11 pm - 3:55 pm
BWI
-
TBU
27h 44m
2 stops
Multiple Airlines Logo
5:40 am - 11:44 pm
TBU
-
BWI
35h 04m
2 stops
$2,151Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
Multiple Airlines Logo
12:35 pm - 3:55 pm
BWI
-
TBU
34h 20m
3 stops
Multiple Airlines Logo
5:40 am - 11:44 am
TBU
-
BWI
47h 04m
3 stops
$2,190Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
Air New Zealand Logo
6:30 am - 10:45 am
IAD
-
TBU
35h 15m
2 stops
Air New Zealand Logo
11:55 am - 6:42 am
TBU
-
IAD
35h 47m
2 stops
$2,328Air New Zealand
Thu, Jun 11 - Thu, Jun 18
Multiple Airlines Logo
4:05 pm - 4:30 pm
IAD
-
TBU
31h 25m
3 stops
Multiple Airlines Logo
11:55 am - 6:42 am
TBU
-
IAD
35h 47m
2 stops
$4,805Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
Multiple Airlines Logo
11:00 am - 4:30 pm
DCA
-
TBU
36h 30m
3 stops
Multiple Airlines Logo
11:55 am - 10:15 pm
TBU
-
DCA
27h 20m
2 stops
$5,302Multiple Airlines
Thu, Jun 11 - Thu, Jun 18

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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, momondo users made 832,500 searches. Data last updated May 16, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Tonga that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Nuku‘alofa

DCA - TBU

DCATBU

Washington, D.C. Reagan-National

Thu 6/11

3:25 pm-3:55 pm

2 stops31h 30m

Nuku‘alofa Fua'Amotu Intl

Thu 6/18

5:40 am-11:00 pm

2 stops34h 20m

$1,909
Quickest round-trip

BaltimoreNuku‘alofa

BWI - TBU

BWITBU

Baltimore/Washington

Thu 6/11

7:11 pm-3:55 pm

2 stops27h 44m

Nuku‘alofa Fua'Amotu Intl

Thu 6/18

5:40 am-11:44 pm

2 stops35h 04m

$2,151

BaltimoreNuku‘alofa

BWI - TBU

BWITBU

Baltimore/Washington

Thu 6/11

12:35 pm-3:55 pm

3 stops34h 20m

Nuku‘alofa Fua'Amotu Intl

Thu 6/18

5:40 am-11:44 am

3 stops47h 04m

$2,190

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Thu 6/11

6:30 am-10:45 am

2 stops35h 15m

Nuku‘alofa Fua'Amotu Intl

Thu 6/18

11:55 am-6:42 am

2 stops35h 47m

$2,328

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Thu 6/11

4:05 pm-4:30 pm

3 stops31h 25m

Nuku‘alofa Fua'Amotu Intl

Thu 6/18

11:55 am-6:42 am

2 stops35h 47m

$4,805

Washington, D.C.Nuku‘alofa

DCA - TBU

DCATBU

Washington, D.C. Reagan-National

Thu 6/11

11:00 am-4:30 pm

3 stops36h 30m

Nuku‘alofa Fua'Amotu Intl

Thu 6/18

11:55 am-10:15 pm

2 stops27h 20m

$5,302
Cheapest one-way

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Mon 8/10

7:30 pm-3:55 pm

2 stops51h 25m

$673
Quickest one-way

BaltimoreNuku‘alofa

BWI - TBU

BWITBU

Baltimore/Washington

Mon 8/10

2:25 pm-10:35 am

3 stops27h 10m

$846

Washington, D.C.Nuku‘alofa

IAD - TBU

IADTBU

Washington, D.C. Dulles Intl

Mon 8/10

9:30 am-10:35 am

3 stops32h 05m

$957

BaltimoreNuku‘alofa

BWI - TBU

BWITBU

Baltimore/Washington

Mon 8/10

7:00 am-2:35 pm

2 stops38h 35m

$1,151

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Tonga from

How to get the cheapest flight ticket from Washington, D.C. to Tonga

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Washington, D.C. to Tonga?

Air New Zealand is the most popular carrier operating from Washington, D.C. to Tonga

Cheap Washington, D.C. to Tonga flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Tonga

Fastest flight time

23h 35m

Direct flights

None
The fastest flight from Washington, D.C. to Tonga takes 23h 35m
There are no direct flights from Washington, D.C. to Tonga. There are no popular flight routes from Washington, D.C. to Tonga.

Frequently asked questions about flying from Washington, D.C. to Tonga

  • When did momondo last update prices for flights from Washington, D.C. to Tonga?

    Prices for flights from Washington, D.C. to Tonga are updated daily.

  • How old do you have to be to fly from Washington, D.C. to Tonga?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Tonga.

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

    The travel and health documents you'll need for your trip to Tonga 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 Tonga. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

Finding the right flight to Tonga from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Tonga quick and easy, saving you time and money.

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

Yes. All flights to Tonga from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Washington, D.C. to Tonga flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Tonga from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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1 adult
Mon 6/15
Mon 6/22

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