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Cheap flights from Sydney to Tonga from $386

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — TBU
9 Jul — 16 Jul1
1 adult

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 4 July 2025.

Round-trip from

$691

One-way from

$386

Popular in

December

Cheapest in

August

Average price

$940

Good round-trip deal

$829 or less

Good one-way deal

$466 or less
Fiji Airways
  • Fiji Airways
  • 28/8-5/9
  • 2 total stops
  • 18h 35m total
  • Sydney to Tonga
Fiji Airways
  • Fiji Airways
  • 23/9
  • 1 total stop
  • 17h 10m total
  • Sydney to Tonga
Highest demand for flights based on searches. 6% potential increase in price ($91 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average return price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from Sydney Kingsford Smith to Tonga.
Price to beat on a one-way flight from Sydney Kingsford Smith to Tonga.

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 4 July 2025.

Thu 28/813:15SYD - TBU
1 stop9h 30mFiji Airways
Fri 5/905:40TBU - SYD
1 stop9h 05mFiji Airways
Deal found 2/7$691
Sat 13/909:05SYD - TBU
Nonstop4h 20mMultiple Airlines
Sat 27/905:40TBU - SYD
1 stop19h 30mMultiple Airlines
Deal found 30/6$711
Sat 13/909:05SYD - TBU
Nonstop4h 20mQantas Airways
Sat 27/917:20TBU - SYD
Nonstop5h 45mQantas Airways
Deal found 30/6$779
Thu 6/1106:00SYD - VAV
1 stop8h 35mFiji Airways
Sat 15/1117:20VAV - SYD
1 stop30h 30mFiji Airways
Deal found 2/7$1,053
Thu 6/1106:00SYD - VAV
1 stop8h 35mMultiple Airlines
Sat 15/1117:20VAV - SYD
2 stops16h 15mMultiple Airlines
Deal found 2/7$1,348

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 4 July 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 28/8

13:15-01:45

1 stop9h 30m

Nuku‘alofa Fua'Amotu Intl

Fri 5/9

05:40-11:45

1 stop9h 05m

$691

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 13/9

09:05-16:25

Nonstop4h 20m

Nuku‘alofa Fua'Amotu Intl

Sat 27/9

05:40-22:10

1 stop19h 30m

$711

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 13/9

09:05-16:25

Nonstop4h 20m

Nuku‘alofa Fua'Amotu Intl

Sat 27/9

17:20-20:05

Nonstop5h 45m

$779

SydneyVava'u

SYD - VAV

SYDVAV

Sydney Kingsford Smith

Tue 22/7

13:15-11:10

1 stop18h 55m

Vava'u Lupepau'U

Fri 1/8

17:20-12:15

1 stop21h 55m

$1,763

SydneyVava'u

SYD - VAV

SYDVAV

Sydney Kingsford Smith

Fri 1/8

09:00-11:10

1 stop23h 10m

Vava'u Lupepau'U

Tue 5/8

11:55-19:20

1 stop10h 25m

$1,823

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 23/9

13:15-09:25

1 stop17h 10m

$386

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 16/8

09:05-16:25

Nonstop4h 20m

$403

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 16/8

18:15-11:10

2 stops37h 55m

$639

SydneyVava'u

SYD - VAV

SYDVAV

Sydney Kingsford Smith

Fri 15/8

13:15-11:10

1 stop18h 55m

$846

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Mon 7/7

08:45-21:35

1 stop9h 50m

$1,140

Flights are sorted by cheapest return flights first.

Deals found on 1/7

Showing 1-10 of 11 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 $742). 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 4 July 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 4 July 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.

Comfort

7.9

Entertainment

7.5

Boarding

8.1

Food

7.5

Overall

8.0

Crew

8.5

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!!

Comfort

7.9

Entertainment

7.5

Boarding

8.1

Food

7.5

Overall

8.0

Crew

8.5

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!!

Comfort

7.9

Entertainment

7.5

Boarding

8.1

Food

7.5

Overall

8.0

Crew

8.5

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!!

Comfort

7.9

Entertainment

7.5

Boarding

8.1

Food

7.5

Overall

8.0

Crew

8.5

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?

  • What are the cheapest airlines to fly from Sydney to Tonga one-way?

    For one-way options, check prices for Fiji Airways. According to our data, you can fly for as low as $386. Users have also found prices from $403 and $1,140 on Qantas Airways and Air New Zealand, respectively.

  • What are the cheapest flights from Sydney to Tonga?

    While on average a flight from Sydney to Tonga is generally $785, our data shows the cheapest flight currently is $384. When looking at the most popular route, (Sydney Kingsford Smith - Nuku‘alofa Fua'Amotu Intl), you can expect to pay $631 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 $742). 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.

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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$526Average$1,152FlexibilityNo cancel feeOn-time74%
Search Fiji Airways flights
Qantas AirwaysCheapest$625Average$892FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$863Average$1,047FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights

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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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