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Cheap flights from Sydney to Tonga from $353

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — TBU
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Sydney to Tonga

Keep the following information in mind while searching for Sydney to Tonga flight deals. Data was last updated 12 September 2025.

Round-trip from

$647

One-way from

$357

Popular in

December

Cheapest in

March

Average price

$774

Good round-trip deal

$721 or less

Good one-way deal

$441 or less
Fiji Airways
  • Fiji Airways
  • 30/10-12/11
  • 2 total stops
  • 51h 15m total
  • Sydney to Tonga
Search Deals
Fiji Airways
  • Fiji Airways
  • 6/12
  • 1 total stop
  • 7h 25m total
  • Sydney to Tonga
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($119 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Sydney Kingsford Smith to Tonga.
Search Deals
Price to beat on a one-way flight from Sydney Kingsford Smith to Tonga.
Search Deals

Find flight deals from Sydney to Tonga

Cheapest flights from Sydney to Tonga
Explore the most affordable flight options available from Sydney to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Thu 30/1014:15SYD - TBU
1 stop23h 10mFiji Airways
Wed 12/1110:25TBU - SYD
1 stop28h 05mFiji Airways
Deal found 10/9$647
Tue 7/1014:15SYD - TBU
1 stop17h 10mFiji Airways
Tue 14/1005:00TBU - SYD
1 stop9h 45mFiji Airways
Deal found 10/9$662
Tue 14/1006:00SYD - TBU
1 stop25h 25mFiji Airways
Sat 18/1005:40TBU - SYD
1 stop9h 35mFiji Airways
Deal found 10/9$700
Tue 14/1009:05SYD - TBU
Nonstop4h 20mMultiple Airlines
Fri 24/1016:25TBU - SYD
1 stop7h 45mMultiple Airlines
Deal found 11/9$748
Tue 14/1009:05SYD - TBU
Nonstop4h 20mMultiple Airlines
Thu 23/1016:25TBU - SYD
1 stop7h 45mMultiple Airlines
Deal found 10/9$749
Thu 30/1014:15SYD - TBU
1 stop9h 30mMultiple Airlines
Wed 12/1110:25TBU - SYD
2 stops23h 35mMultiple Airlines
Deal found 10/9$816
Tue 7/1014:15SYD - TBU
1 stop17h 10mMultiple Airlines
Tue 14/1005:00TBU - SYD
2 stops29h 05mMultiple Airlines
Deal found 10/9$822
Tue 14/1014:15SYD - TBU
1 stop17h 10mMultiple Airlines
Sat 18/1016:20TBU - SYD
Nonstop5h 45mMultiple Airlines
Deal found 10/9$846
Sat 25/1006:00SYD - TBU
1 stop7h 25mMultiple Airlines
Sat 1/1116:55TBU - SYD
Nonstop5h 20mMultiple Airlines
Deal found 10/9$853
Sat 4/1009:05SYD - TBU
Nonstop4h 20mMultiple Airlines
Sat 11/1016:25TBU - SYD
1 stop22h 20mMultiple Airlines
Deal found 10/9$857
Sat 25/1006:00SYD - VAV
1 stop8h 35mFiji Airways
Sat 1/1117:20VAV - SYD
1 stop21h 10mFiji Airways
Deal found 9/9$1,561
Sat 25/1013:00SYD - VAV
2 stops49h 35mMultiple Airlines
Sat 1/1117:20VAV - SYD
1 stop21h 10mMultiple Airlines
Deal found 9/9$1,844

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney 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, Cheapflights users made 647,157 searches. Data last updated 12 September 2025.
Use the filters below to find and compare flights from Sydney to Tonga that are best for you.

Fly from

Sydney

Fly to

Tonga

Route

Depart

Return

Price

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Thu 12/2

14:10-00:30

1 stop8h 20m

Nuku‘alofa Fua'Amotu Intl

Thu 26/2

05:00-12:30

1 stop9h 30m

$689

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 10/2

14:10-01:50

1 stop9h 40m

Nuku‘alofa Fua'Amotu Intl

Mon 23/2

11:20-21:50

1 stop12h 30m

$689

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Thu 12/2

14:10-00:30

1 stop8h 20m

Nuku‘alofa Fua'Amotu Intl

Fri 27/2

05:00-12:30

1 stop9h 30m

$689

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 7/2

06:00-15:25

1 stop7h 25m

Nuku‘alofa Fua'Amotu Intl

Fri 27/2

05:00-21:50

1 stop18h 50m

$689

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Fri 13/2

06:00-15:25

1 stop7h 25m

Nuku‘alofa Fua'Amotu Intl

Sat 21/2

05:00-12:30

1 stop9h 30m

$689

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Mon 9/2

14:10-10:35

1 stop18h 25m

Nuku‘alofa Fua'Amotu Intl

Tue 24/2

05:00-12:30

1 stop9h 30m

$689

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sun 8/2

06:00-10:35

1 stop26h 35m

Nuku‘alofa Fua'Amotu Intl

Wed 25/2

05:40-21:50

1 stop18h 10m

$691

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Fri 13/2

06:00-01:05

1 stop17h 05m

Nuku‘alofa Fua'Amotu Intl

Thu 26/2

11:20-12:30

1 stop27h 10m

$691

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sun 8/2

14:10-10:35

1 stop18h 25m

Nuku‘alofa Fua'Amotu Intl

Tue 24/2

05:00-12:30

1 stop9h 30m

$691

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Wed 11/2

14:10-10:35

1 stop18h 25m

Nuku‘alofa Fua'Amotu Intl

Wed 25/2

05:40-21:50

1 stop18h 10m

$691

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 37 results
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Best time to book a flight from Sydney to Tonga

Have a flexible travel schedule? Discover the best time to fly to Tonga from Sydney with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Tonga

What is the cheapest month to book a flight from Sydney to Tonga?

Currently, April is the cheapest month in which you can book a flight from Sydney to Tonga (average of $447). Flying from Sydney to Tonga in December is currently the most expensive (average of $800). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SYD to TO?

Find hourly flight availability from Sydney to Tonga. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sydney to Tonga as you normally would.

Reviews of airlines servicing Tonga

Get insights into the airlines that provide service to Tonga. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tonga. Reviews last updated 12 September 2025.
Read reviews from past customers who have flown with Fiji Airways, Air New Zealand, andQantas Airways from Sydney to Tonga. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.0
Very Good
205 reviews
Check prices

Entertainment

7.4

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,June 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Fiji Airways
8.0
Very Good
205 reviews
Fiji Airways
8.0
Very Good
205 reviews
Check prices

Entertainment

7.4

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,June 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Air New Zealand
8.0
Very Good
505 reviews
Fiji Airways
8.0
Very Good
205 reviews
Check prices

Entertainment

7.4

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,June 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Qantas Airways
7.5
Good
905 reviews
Fiji Airways
8.0
Very Good
205 reviews
Check prices

Entertainment

7.4

Food

7.5

Overall

8.0

Comfort

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 16
6.0
Good

Christopher,June 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Related info for your journey

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

  • What airport do you fly from for flights from Sydney to Tonga?

    Sydney Kingsford Smith (SYD), located 7.5 km from the city centre, is the airport you fly out of when you book flights from Sydney to Tonga.

  • How popular is this Sydney to Tonga flight route?

    Within the past month, 1,679 users have taken a look at flights from Sydney Kingsford Smith to Tonga.

  • How long is the flight from Sydney to Tonga?

    There are many flights that can get you from Sydney to Tonga in 8h 20m. Fly via Fiji Airways to get the fastest option. Airlines will cover a distance of 3584 km.

  • What are the cheapest flights from Sydney to Tonga?

    While on average a flight from Sydney to Tonga is generally $664, our data shows the cheapest flight currently is $269. When looking at the most popular route, (Sydney Kingsford Smith - Nuku‘alofa Fua'Amotu Intl), you can expect to pay $636 for that flight.

  • Can I find deals for flights from Sydney to Tonga that include hotel bookings?

    Yes. In addition to deals on Sydney to Tonga flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Tonga?

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

  • Can I find deals for business class flights from Sydney to Tonga?

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

  • What is the cheapest month to book a flight from Sydney to Tonga?

    Currently, April is the cheapest month in which you can book a flight from Sydney to Tonga (average of $447). Flying from Sydney to Tonga in December is currently the most expensive (average of $800). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Sydney to Tonga

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Sydney to Tonga

Discover the top 3 airlines that operate flights from Sydney to Tonga. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$522Average$1,174FlexibilityNo cancel feeOn-time74%
Search Fiji Airways flights
Qantas AirwaysCheapest$622Average$879FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$855Average$1,086FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Sydney to Tonga?

Cheapflights helps you search for flights from Sydney to Tonga via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Sydney to Tonga?

Cheapflights helps you find that perfect flight to Tonga from Sydney by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Sydney to Tonga with no change fees?

Yes! Cheapflights helps users easily find flights from Sydney to Tonga with no change fees.

Can Cheapflights notify me if prices for flights from Sydney to Tonga become cheaper?

Yes! Start tracking prices for Sydney to Tonga flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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