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Cheap flights from Portland to Tongatapu from $1,275

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Tongatapu departing on 9/21. 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 Portland to Tongatapu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:35 pm - 10:35 am
PDX
-
TBU
21h 00m
2 stops
Multiple Airlines Logo
11:20 am - 8:50 pm
TBU
-
PDX
29h 30m
2 stops
$1,275Multiple Airlines
Mon, Sep 21 - Wed, Sep 30
Fiji Airways Logo
10:30 am - 1:05 am
PDX
-
TBU
42h 35m
3 stops
Fiji Airways Logo
11:20 am - 9:15 pm
TBU
-
PDX
29h 55m
2 stops
$1,453Fiji Airways
Mon, Sep 21 - Wed, Sep 30

momondo Fare Finder

 
Customize your flight search to find flights from Portland 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 May 10, 2026.
Use the filters below to find and compare flights from Portland to Tongatapu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandNuku‘alofa

PDX - TBU

PDXTBU

Portland

Mon 9/21

5:35 pm-10:35 am

2 stops21h 00m

Nuku‘alofa Fua'Amotu Intl

Wed 9/30

11:20 am-8:50 pm

2 stops29h 30m

$1,275

PortlandNuku‘alofa

PDX - TBU

PDXTBU

Portland

Mon 9/21

10:30 am-1:05 am

3 stops42h 35m

Nuku‘alofa Fua'Amotu Intl

Wed 9/30

11:20 am-9:15 pm

2 stops29h 55m

$1,453

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Portland to Tongatapu flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Tongatapu

Fastest flight time

23h 45m

Direct flights

None
The fastest flight from Portland to Tongatapu takes 23h 45m
There are no direct flights from Portland to Tongatapu. There are no popular flight routes from Portland to Tongatapu.
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Frequently asked questions about flying from Portland to Tongatapu

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

    Prices for flights from Portland Airport to Tongatapu were last updated today.

  • How old do you have to be to fly from Portland 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 Portland Airport 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.

Frequently asked questions about flying from Portland to Tongatapu

  • How do I get Price Alerts for flights from Portland to Tongatapu?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Portland 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 Portland 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?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Tongatapu?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Tongatapu. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Portland to Tongatapu with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Tongatapu from Portland.

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

If you are not ready to book a flight from Portland to Tongatapu now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Tongatapu and let you know when they change.

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Tue 6/9
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Popular cities in Tongatapu

Popular flights according to clicks in the last 7 days on momondo
Flights to Nuku‘alofafrom $935