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Cheap flights from Sydney to Tonga from $434

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — TBU
27 Aug — 3 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap 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 28 July 2026.

Tue 15/913:15
SYD
-
TBU
1 stop8h 50m
Fiji Airways
Tue 22/910:55
TBU
-
SYD
1 stop14h 30m
Fiji Airways
Deal found 24/7$593
Tue 13/1006:05
SYD
-
TBU
1 stop26h 30m
Fiji Airways
Fri 30/1011:20
TBU
-
SYD
1 stop27h 15m
Fiji Airways
Deal found 28/7$596
Tue 25/813:15
SYD
-
TBU
1 stop9h 30m
Fiji Airways
Tue 1/911:20
TBU
-
SYD
1 stop14h 05m
Fiji Airways
Deal found 26/7$606
Sun 13/913:15
SYD
-
TBU
1 stop25h 45m
Fiji Airways
Thu 17/911:20
TBU
-
SYD
1 stop14h 05m
Fiji Airways
Deal found 25/7$608
Tue 8/906:15
SYD
-
TBU
1 stop15h 50m
Fiji Airways
Sat 12/905:40
TBU
-
SYD
1 stop19h 45m
Fiji Airways
Deal found 24/7$614
Thu 3/913:15
SYD
-
TBU
1 stop8h 50m
Fiji Airways
Wed 9/905:00
TBU
-
SYD
1 stop9h 50m
Fiji Airways
Deal found 25/7$625
Fri 4/913:15
SYD
-
TBU
1 stop18h 20m
Fiji Airways
Thu 10/911:20
TBU
-
SYD
1 stop14h 05m
Fiji Airways
Deal found 25/7$668
Tue 25/809:05
SYD
-
TBU
Nonstop4h 25m
Qantas Airways
Tue 1/917:30
TBU
-
SYD
Nonstop5h 40m
Qantas Airways
Deal found 27/7$679
Tue 8/909:05
SYD
-
TBU
Nonstop4h 25m
Qantas Airways
Tue 15/917:30
TBU
-
SYD
Nonstop5h 40m
Qantas Airways
Deal found 28/7$688
Fri 11/913:15
SYD
-
VAV
1 stop18h 10m
Fiji Airways
Thu 17/917:20
VAV
-
SYD
1 stop21h 30m
Fiji Airways
Deal found 24/7$1,565
Sun 30/813:15
SYD
-
VAV
1 stop18h 55m
Fiji Airways
Tue 8/917:20
VAV
-
SYD
1 stop21h 30m
Fiji Airways
Deal found 25/7$1,795
Fri 11/913:15
SYD
-
VAV
1 stop24h 20m
Multiple Airlines
Thu 17/917:20
VAV
-
SYD
2 stops29h 45m
Multiple Airlines
Deal found 24/7$1,835

Find flight deals from Sydney to Tonga

Keep the following information in mind while searching for Sydney to Tonga flight deals. Data was last updated 28 July 2026.

Round-trip from

$593

One-way from

$434

Popular in

December

Cheapest in

February

Average price

$950

Good round-trip deal

$907 or less

Good one-way deal

$471 or less
Fiji Airways
  • Fiji Airways
  • 15/9-22/9
  • 2 total stops
  • 23h 20m total
  • Sydney to Tonga
Search Deals
Fiji Airways
  • Fiji Airways
  • 2/10
  • 1 total stop
  • 9h 30m total
  • Sydney to Tonga
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($125 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 July 2026
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

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 28 July 2026.
Use the filters below to find and compare flights from Sydney to Tonga that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 13/10

06:05-10:35

1 stop26h 30m

Nuku‘alofa Fua'Amotu Intl

Fri 30/10

11:20-12:35

1 stop27h 15m

$596

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sun 13/9

13:15-18:00

1 stop25h 45m

Nuku‘alofa Fua'Amotu Intl

Thu 17/9

05:40-11:50

1 stop9h 10m

$649

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sun 24/1

06:00-10:35

1 stop26h 35m

Nuku‘alofa Fua'Amotu Intl

Tue 9/2

11:20-22:05

1 stop12h 45m

$668

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Fri 4/9

13:15-01:45

1 stop9h 30m

Nuku‘alofa Fua'Amotu Intl

Mon 7/9

18:50-11:50

1 stop20h 00m

$668

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Thu 21/1

14:00-15:00

1 stop23h 00m

Nuku‘alofa Fua'Amotu Intl

Wed 10/2

05:00-12:35

1 stop9h 35m

$668

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Fri 4/9

13:15-10:35

1 stop18h 20m

Nuku‘alofa Fua'Amotu Intl

Tue 8/9

11:20-11:50

1 stop27h 30m

$668

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Fri 22/1

06:00-01:05

1 stop17h 05m

Nuku‘alofa Fua'Amotu Intl

Tue 9/2

05:40-22:05

1 stop18h 25m

$668

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Thu 21/1

14:00-01:50

1 stop9h 50m

Nuku‘alofa Fua'Amotu Intl

Tue 9/2

05:40-22:05

1 stop18h 25m

$668
Fastest return journey

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 8/9

09:05-16:30

Nonstop4h 25m

Nuku‘alofa Fua'Amotu Intl

Tue 15/9

17:30-20:10

Nonstop5h 40m

$701

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 8/9

13:15-01:05

1 stop8h 50m

Nuku‘alofa Fua'Amotu Intl

Tue 15/9

17:30-20:10

Nonstop5h 40m

$757

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 27 resultsSorted by cheapest first
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2
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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, February is the cheapest month in which you can book a flight from Sydney to Tonga (average of $659). Flying from Sydney to Tonga in December is currently the most expensive (average of $1,313). 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 28 July 2026.

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.

How often are flights from Sydney to Tonga delayed?

About 58% of weekly flights between Sydney and Tonga have experienced delays in the past year, with the average delay time being 101 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 Wednesday 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 58% of flights being delayed.

How far ahead should I book a flight from Sydney to Tonga?

Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Tonga. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 28 July 2026.
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
249 reviews
Check prices

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.5

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,July 2026

YVR - NAN

They didn’t enter the Tabua Club number on my boarding pass. Had to show my email to confirm my membership to enter the lounge at YVR.
Fiji Airways
8.0
Very Good
249 reviews
Fiji Airways
8.0
Very Good
249 reviews
Check prices

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.5

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,July 2026

YVR - NAN

They didn’t enter the Tabua Club number on my boarding pass. Had to show my email to confirm my membership to enter the lounge at YVR.
Air New Zealand
8.0
Very Good
656 reviews
Fiji Airways
8.0
Very Good
249 reviews
Check prices

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.5

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,July 2026

YVR - NAN

They didn’t enter the Tabua Club number on my boarding pass. Had to show my email to confirm my membership to enter the lounge at YVR.
Qantas Airways
7.5
Good
1,069 reviews
Fiji Airways
8.0
Very Good
249 reviews
Check prices

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.5

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,July 2026

YVR - NAN

They didn’t enter the Tabua Club number on my boarding pass. Had to show my email to confirm my membership to enter the lounge at YVR.

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, 1,304 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 26h 30m. Fly via Fiji Airways to get the fastest option. Airlines will cover a distance of 3584 km.

  • 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 $285. Users have also found prices from $352 and $443 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 $799, our data shows the cheapest flight currently is $416. When looking at the most popular route, (Sydney Kingsford Smith - Nuku‘alofa Fua'Amotu Intl), you can expect to pay $536 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, February is the cheapest month in which you can book a flight from Sydney to Tonga (average of $659). Flying from Sydney to Tonga in December is currently the most expensive (average of $1,313). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 28 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$446Average$1,222FlexibilityNo cancel feeOn-time74%
Search Fiji Airways flights
Qantas AirwaysCheapest$603Average$928FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$727Average$1,204FlexibilityNo 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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