Latest deals
FAQs
Price Alerts

Cheap flights from Washington to Tongatapu from $1,147

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Tongatapu departing on 8/13. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington to Tongatapu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:34 pm - 3:55 pm
PDX
-
TBU
26h 21m
2 stops
Multiple Airlines Logo
11:20 am - 8:31 pm
TBU
-
PDX
29h 11m
2 stops
$1,147Multiple Airlines
Thu, Aug 13 - Wed, Aug 26
Air New Zealand Logo
5:00 am - 10:45 am
SEA
-
TBU
33h 45m
2 stops
Air New Zealand Logo
11:55 am - 6:32 pm
TBU
-
SEA
26h 37m
2 stops
$1,352Air New Zealand
Sun, Jul 12 - Mon, Jul 20
Air New Zealand Logo
3:33 pm - 9:40 pm
SEA
-
TBU
34h 07m
2 stops
Air New Zealand Logo
11:55 am - 6:32 pm
TBU
-
SEA
26h 37m
2 stops
$1,354Air New Zealand
Wed, Jul 8 - Sat, Jul 18
Air New Zealand Logo
8:45 am - 9:40 pm
SEA
-
TBU
40h 55m
2 stops
Air New Zealand Logo
11:55 am - 6:32 pm
TBU
-
SEA
26h 37m
2 stops
$1,365Air New Zealand
Wed, Jul 8 - Mon, Jul 20
Multiple Airlines Logo
5:32 pm - 3:55 pm
PDX
-
TBU
26h 23m
3 stops
Multiple Airlines Logo
11:20 am - 8:31 pm
TBU
-
PDX
29h 11m
2 stops
$1,382Multiple Airlines
Thu, Aug 13 - Wed, Aug 26
Air New Zealand Logo
8:45 am - 9:40 pm
SEA
-
TBU
40h 55m
2 stops
Air New Zealand Logo
8:55 pm - 10:22 pm
TBU
-
SEA
45h 27m
2 stops
$1,385Air New Zealand
Wed, Jul 8 - Tue, Jul 14
Air New Zealand Logo
10:29 am - 10:45 am
SEA
-
TBU
52h 16m
2 stops
Air New Zealand Logo
11:55 am - 10:22 pm
TBU
-
SEA
30h 27m
2 stops
$1,409Air New Zealand
Sat, Jul 11 - Mon, Jul 20
Fiji Airways Logo
5:38 pm - 1:45 am
PDX
-
TBU
36h 07m
2 stops
Fiji Airways Logo
5:40 am - 9:35 pm
TBU
-
PDX
35h 55m
2 stops
$1,612Fiji Airways
Sat, Apr 4 - Tue, Apr 7
Fiji Airways Logo
5:38 pm - 1:45 am
PDX
-
TBU
36h 07m
2 stops
Fiji Airways Logo
5:40 am - 5:28 am
TBU
-
PDX
43h 48m
3 stops
$1,793Fiji Airways
Sat, Apr 4 - Tue, Apr 7
Fiji Airways Logo
5:35 pm - 1:05 am
PDX
-
TBU
35h 30m
2 stops
Fiji Airways Logo
5:40 am - 4:17 pm
TBU
-
PDX
30h 37m
3 stops
$1,958Fiji Airways
Wed, Jun 17 - Fri, Jul 24

Air New Zealand flights from State of Washington to Tongatapu

Our best Air New Zealand deals on State of Washington to Tongatapu flight tickets
Air New Zealand
Jul 12
SEA5:00 amSeattle/Tacoma Intl
33h 45m
2 stops
TBU10:45 amNuku‘alofa Fua'Amotu Intl
Jul 20
TBU11:55 amNuku‘alofa Fua'Amotu Intl
26h 37m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$1,352
Air New Zealand
Jul 8
SEA3:33 pmSeattle/Tacoma Intl
34h 07m
2 stops
TBU9:40 pmNuku‘alofa Fua'Amotu Intl
Jul 18
TBU11:55 amNuku‘alofa Fua'Amotu Intl
26h 37m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$1,354
Air New Zealand
Jul 8
SEA8:45 amSeattle/Tacoma Intl
40h 55m
2 stops
TBU9:40 pmNuku‘alofa Fua'Amotu Intl
Jul 20
TBU11:55 amNuku‘alofa Fua'Amotu Intl
26h 37m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$1,365

Fiji Airways flights from State of Washington to Tongatapu

Our best Fiji Airways deals on State of Washington to Tongatapu flight tickets
Fiji Airways
Jul 9
SEA2:32 pmSeattle/Tacoma Intl
29h 23m
2 stops
TBU3:55 pmNuku‘alofa Fua'Amotu Intl
Jul 17
TBU11:20 amNuku‘alofa Fua'Amotu Intl
26h 43m
2 stops
SEA6:03 pmSeattle/Tacoma Intl
$1,505
Fiji Airways
Jul 9
SEA2:32 pmSeattle/Tacoma Intl
29h 23m
2 stops
TBU3:55 pmNuku‘alofa Fua'Amotu Intl
Jul 14
TBU5:40 amNuku‘alofa Fua'Amotu Intl
37h 15m
2 stops
SEA10:55 pmSeattle/Tacoma Intl
$1,533
Fiji Airways
Jul 11
SEA6:37 pmSeattle/Tacoma Intl
35h 08m
2 stops
TBU1:45 amNuku‘alofa Fua'Amotu Intl
Jul 15
TBU5:40 amNuku‘alofa Fua'Amotu Intl
34h 10m
2 stops
SEA7:50 pmSeattle/Tacoma Intl
$1,583

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 March 3, 2026.
Use the filters below to find and compare flights from Washington to Tongatapu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandNuku‘alofa

PDX - TBU

PDXTBU

Portland

Thu 8/13

5:34 pm-3:55 pm

2 stops26h 21m

Nuku‘alofa Fua'Amotu Intl

Wed 8/26

11:20 am-8:31 pm

2 stops29h 11m

$1,147

SeattleNuku‘alofa

SEA - TBU

SEATBU

Seattle/Tacoma Intl

Sun 7/12

5:00 am-10:45 am

2 stops33h 45m

Nuku‘alofa Fua'Amotu Intl

Mon 7/20

11:55 am-6:32 pm

2 stops26h 37m

$1,352

SeattleNuku‘alofa

SEA - TBU

SEATBU

Seattle/Tacoma Intl

Wed 7/8

3:33 pm-9:40 pm

2 stops34h 07m

Nuku‘alofa Fua'Amotu Intl

Sat 7/18

11:55 am-6:32 pm

2 stops26h 37m

$1,354

SeattleNuku‘alofa

SEA - TBU

SEATBU

Seattle/Tacoma Intl

Wed 7/8

8:45 am-9:40 pm

2 stops40h 55m

Nuku‘alofa Fua'Amotu Intl

Mon 7/20

11:55 am-6:32 pm

2 stops26h 37m

$1,365

PortlandNuku‘alofa

PDX - TBU

PDXTBU

Portland

Thu 8/13

5:32 pm-3:55 pm

3 stops26h 23m

Nuku‘alofa Fua'Amotu Intl

Wed 8/26

11:20 am-8:31 pm

2 stops29h 11m

$1,382

SeattleNuku‘alofa

SEA - TBU

SEATBU

Seattle/Tacoma Intl

Wed 7/8

8:45 am-9:40 pm

2 stops40h 55m

Nuku‘alofa Fua'Amotu Intl

Tue 7/14

8:55 pm-10:22 pm

2 stops45h 27m

$1,385

SeattleNuku‘alofa

SEA - TBU

SEATBU

Seattle/Tacoma Intl

Sat 7/11

10:29 am-10:45 am

2 stops52h 16m

Nuku‘alofa Fua'Amotu Intl

Mon 7/20

11:55 am-10:22 pm

2 stops30h 27m

$1,409

PortlandNuku‘alofa

PDX - TBU

PDXTBU

Portland

Sat 4/4

5:38 pm-1:45 am

2 stops36h 07m

Nuku‘alofa Fua'Amotu Intl

Tue 4/7

5:40 am-9:35 pm

2 stops35h 55m

$1,612

PortlandNuku‘alofa

PDX - TBU

PDXTBU

Portland

Sat 4/4

5:38 pm-1:45 am

2 stops36h 07m

Nuku‘alofa Fua'Amotu Intl

Tue 4/7

5:40 am-5:28 am

3 stops43h 48m

$1,793

PortlandNuku‘alofa

PDX - TBU

PDXTBU

Portland

Wed 6/17

5:35 pm-1:05 am

2 stops35h 30m

Nuku‘alofa Fua'Amotu Intl

Fri 7/24

5:40 am-4:17 pm

3 stops30h 37m

$1,958

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap State of Washington to Tongatapu flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Tongatapu

Fastest flight time

29h 23m

Direct flights

None
The fastest flight from State of Washington to Tongatapu takes 29h 23m
There are no direct flights from State of Washington to Tongatapu. There are no popular flight routes from State of Washington to Tongatapu.
Search flight deals

  • When did momondo last update prices for flights from Washington to Tongatapu?

    Prices for flights from Washington to Tongatapu refresh daily.

  • How old do you have to be to fly from Washington to Tongatapu?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Tongatapu.

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

    The travel and health documents required for your trip to Tongatapu can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Tongatapu. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from State of Washington to Tongatapu?

    Search flight deals from State of Washington to Tongatapu. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from State of Washington to Tongatapu with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • 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 to Tongatapu?

Finding the right flight to Tongatapu from Washington 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 Tongatapu quick and easy, saving you time and money.

Can I find flights from Washington to Tongatapu with flexible booking policies on momondo?

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

How can momondo help me find flights from Washington to Tongatapu?

Once you have performed a search for Washington 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 to Tongatapu right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington to Tongatapu flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Tongatapu trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 4/2
Thu 4/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Tongatapu

Popular cities in Tongatapu

Popular flights according to clicks in the last 7 days on momondo
Flights to Nuku‘alofafrom $872