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Cheap flights from Sydney to Tonga from $420

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — TBU
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

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 27 November 2025.

Round-trip from

$766

One-way from

$663

Popular in

December

Cheapest in

March

Average price

$819

Good round-trip deal

$901 or less

Good one-way deal

$462 or less
Fiji Airways
  • Fiji Airways
  • 1/3-19/3
  • 2 total stops
  • 28h 10m total
  • Sydney to Tonga
Search Deals
Fiji Airways
  • Fiji Airways
  • 29/11
  • 1 total stop
  • 7h 00m total
  • Sydney to Tonga
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($146 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($57 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 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.
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Find flight deals from Sydney to Tonga

Enter your travel dates to find the best prices.

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 27 November 2025.

Sun 7/1220:25SYD - TBU
2 stops27h 25mMultiple Airlines
Sat 13/1216:00TBU - SYD
1 stop23h 50mMultiple Airlines
Deal found 25/11$942
Tue 9/1206:00SYD - TBU
1 stop25h 30mFiji Airways
Tue 16/1205:40TBU - SYD
1 stop8h 55mFiji Airways
Deal found 25/11$1,139
Tue 9/1206:00SYD - TBU
1 stop25h 30mMultiple Airlines
Tue 16/1216:55TBU - SYD
Nonstop5h 20mMultiple Airlines
Deal found 25/11$1,173
Tue 30/1209:10SYD - TBU
Nonstop4h 35mMultiple Airlines
Fri 30/116:00TBU - SYD
2 stops42h 40mMultiple Airlines
Deal found 25/11$1,215
Tue 9/1209:10SYD - TBU
Nonstop4h 35mQantas Airways
Tue 16/1216:55TBU - SYD
Nonstop5h 20mQantas Airways
Deal found 25/11$1,355

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 27 November 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

Sat 28/2

09:10-15:45

Nonstop4h 35m

Nuku‘alofa Fua'Amotu Intl

Tue 24/3

11:20-22:05

1 stop12h 45m

$789

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 28/2

07:45-20:20

1 stop10h 35m

Nuku‘alofa Fua'Amotu Intl

Sat 21/3

05:00-12:35

1 stop9h 35m

$804

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 28/2

09:10-15:45

Nonstop4h 35m

Nuku‘alofa Fua'Amotu Intl

Sat 21/3

16:55-20:15

Nonstop5h 20m

$810

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 10/1

09:10-15:45

Nonstop4h 35m

Nuku‘alofa Fua'Amotu Intl

Sat 17/1

16:55-20:15

Nonstop5h 20m

$824

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 10/2

14:00-01:50

1 stop9h 50m

Nuku‘alofa Fua'Amotu Intl

Tue 24/2

05:00-16:15

2 stops13h 15m

$892

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 28/2

10:20-20:20

1 stop8h 00m

Nuku‘alofa Fua'Amotu Intl

Wed 18/3

05:40-12:35

1 stop8h 55m

$904

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Thu 26/2

14:00-01:50

1 stop9h 50m

Nuku‘alofa Fua'Amotu Intl

Fri 20/3

11:20-20:50

2 stops11h 30m

$906

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 3/3

14:00-01:50

1 stop9h 50m

Nuku‘alofa Fua'Amotu Intl

Fri 20/3

11:20-20:50

2 stops11h 30m

$906

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sun 1/3

14:00-10:35

1 stop18h 35m

$420

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 28/2

09:10-15:45

Nonstop4h 35m

$430

Flights are sorted by cheapest return flights first.

Deals found on 25/11

Showing 1-10 of 15 results
1
2

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, March is the cheapest month in which you can book a flight from Sydney to Tonga (average of $446). Flying from Sydney to Tonga in December is currently the most expensive (average of $749). 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 27 November 2025.

When flying from Sydney to Tonga, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight in the morning.

What is the cheapest day to fly from Sydney to Tonga?

Use this chart to determine the cheapest time to fly return from Sydney to Tonga. Price data was last updated on 25 November 2025.

Travellers seeking maximum savings on their Sydney to Tonga flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights from Sydney to Tonga delayed?

About 45% of weekly flights between Sydney and Tonga have experienced delays in the past year, with the average delay time being 94 minutes.

What is the most punctual flight time for Sydney to Tonga flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Sydney to Tonga flights?

Over the past year, Qantas Airways have had the lowest number of delays on this route, with just 45% of flights being delayed.

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 27 November 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
8.1
Very Good
209 reviews
Check prices

Comfort

8.0

Food

7.5

Overall

8.1

Boarding

8.2

Crew

8.5

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.1
Very Good
209 reviews
Fiji Airways
8.1
Very Good
209 reviews
Check prices

Comfort

8.0

Food

7.5

Overall

8.1

Boarding

8.2

Crew

8.5

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air New Zealand
8.0
Very Good
537 reviews
Fiji Airways
8.1
Very Good
209 reviews
Check prices

Comfort

8.0

Food

7.5

Overall

8.1

Boarding

8.2

Crew

8.5

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Qantas Airways
7.5
Good
944 reviews
Fiji Airways
8.1
Very Good
209 reviews
Check prices

Comfort

8.0

Food

7.5

Overall

8.1

Boarding

8.2

Crew

8.5

Entertainment

7.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

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, 1,726 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 4h 35m. Fly via Qantas Airways to get the fastest option. Airlines will cover a distance of 3584 km. Generally, flights for this route are direct.

  • 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 $420. Users have also found prices from $430 and $490 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 $816, our data shows the cheapest flight currently is $419. When looking at the most popular route, (Sydney Kingsford Smith - Nuku‘alofa Fua'Amotu Intl), you can expect to pay $587 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, March is the cheapest month in which you can book a flight from Sydney to Tonga (average of $446). Flying from Sydney to Tonga in December is currently the most expensive (average of $749). 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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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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$525Average$1,181FlexibilityNo cancel feeOn-time74%
Search Fiji Airways flights
Qantas AirwaysCheapest$634Average$902FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$877Average$1,154FlexibilityNo 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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