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Cheap flights from Sydney to Tonga from $316

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — TBU
15 Apr — 22 Apr1
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 16 March 2026.

Wed 29/413:20
SYD
-
TBU
1 stop18h 15m
Fiji Airways
Wed 6/511:20
TBU
-
SYD
1 stop13h 50m
Fiji Airways
Deal found 15/3$564
Tue 18/806:00
SYD
-
TBU
1 stop16h 05m
Fiji Airways
Mon 31/811:20
TBU
-
SYD
1 stop13h 50m
Fiji Airways
Deal found 15/3$574
Mon 13/413:15
SYD
-
TBU
1 stop9h 30m
Fiji Airways
Wed 15/411:20
TBU
-
SYD
1 stop27h 30m
Fiji Airways
Deal found 13/3$577
Wed 8/406:00
SYD
-
TBU
1 stop16h 05m
Fiji Airways
Wed 15/411:20
TBU
-
SYD
1 stop27h 30m
Fiji Airways
Deal found 12/3$593
Tue 2/613:15
SYD
-
TBU
1 stop8h 50m
Fiji Airways
Tue 9/611:20
TBU
-
SYD
1 stop13h 50m
Fiji Airways
Deal found 16/3$607
Fri 17/406:00
SYD
-
TBU
1 stop6h 55m
Fiji Airways
Mon 20/411:20
TBU
-
SYD
1 stop13h 50m
Fiji Airways
Deal found 15/3$608
Tue 11/806:00
SYD
-
TBU
1 stop16h 45m
Fiji Airways
Wed 9/905:00
TBU
-
SYD
1 stop9h 50m
Fiji Airways
Deal found 13/3$610
Fri 24/706:00
SYD
-
TBU
1 stop16h 45m
Fiji Airways
Tue 28/711:20
TBU
-
SYD
1 stop13h 50m
Fiji Airways
Deal found 14/3$611
Tue 5/513:15
SYD
-
TBU
1 stop8h 50m
Fiji Airways
Sat 16/516:55
TBU
-
SYD
1 stop21h 55m
Fiji Airways
Deal found 15/3$613
Tue 1/913:15
SYD
-
TBU
1 stop8h 50m
Fiji Airways
Tue 15/905:40
TBU
-
SYD
1 stop9h 10m
Fiji Airways
Deal found 11/3$614
Mon 31/813:15
SYD
-
TBU
1 stop9h 30m
Fiji Airways
Tue 15/905:40
TBU
-
SYD
1 stop9h 10m
Fiji Airways
Deal found 12/3$617
Wed 6/513:20
SYD
-
VAV
1 stop24h 15m
Fiji Airways
Sat 9/517:20
VAV
-
SYD
1 stop21h 30m
Fiji Airways
Deal found 15/3$1,622

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 16 March 2026.

Round-trip from

$564

One-way from

$316

Popular in

December

Cheapest in

February

Average price

$743

Good round-trip deal

$775 or less

Good one-way deal

$468 or less
Fiji Airways
  • Fiji Airways
  • 29/4-6/5
  • 2 total stops
  • 32h 05m total
  • Sydney to Tonga
Search Deals
Fiji Airways
  • Fiji Airways
  • 12/4
  • 1 total stop
  • 18h 20m total
  • Sydney to Tonga
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($139 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 16 March 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

Fri 24/7

06:00-01:45

1 stop16h 45m

Nuku‘alofa Fua'Amotu Intl

Tue 28/7

11:20-22:10

1 stop13h 50m

$607

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 11/8

06:00-01:45

1 stop16h 45m

Nuku‘alofa Fua'Amotu Intl

Wed 9/9

05:00-11:50

1 stop9h 50m

$610
Fastest return journey

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Sat 25/4

06:00-15:55

1 stop6h 55m

Nuku‘alofa Fua'Amotu Intl

Wed 29/4

05:00-12:05

1 stop10h 05m

$679

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Fri 4/9

06:00-01:45

1 stop16h 45m

Nuku‘alofa Fua'Amotu Intl

Thu 10/9

05:00-11:50

1 stop9h 50m

$693

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 9/6

13:15-01:05

1 stop8h 50m

Nuku‘alofa Fua'Amotu Intl

Sat 13/6

05:00-11:50

1 stop9h 50m

$696

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Fri 24/7

13:15-01:45

1 stop9h 30m

Nuku‘alofa Fua'Amotu Intl

Tue 28/7

05:40-14:45

2 stops12h 05m

$762

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Thu 3/9

13:15-10:35

1 stop18h 20m

Nuku‘alofa Fua'Amotu Intl

Thu 17/9

05:00-22:10

1 stop20h 10m

$762

SydneyNuku‘alofa

SYD - TBU

SYDTBU

Sydney Kingsford Smith

Tue 11/8

06:00-01:45

1 stop16h 45m

Nuku‘alofa Fua'Amotu Intl

Wed 9/9

05:00-14:15

2 stops12h 15m

$842

SydneyVava'u

SYD - VAV

SYDVAV

Sydney Kingsford Smith

Wed 6/5

13:20-16:35

1 stop24h 15m

Vava'u Lupepau'U

Sat 9/5

17:20-11:50

1 stop21h 30m

$1,622

SydneyVava'u

SYD - VAV

SYDVAV

Sydney Kingsford Smith

Thu 30/4

06:00-16:35

1 stop7h 35m

Vava'u Lupepau'U

Sat 9/5

17:20-11:50

1 stop21h 30m

$1,702

Flights are sorted by cheapest return flights first.

Deals found on 15/3

Showing 1-10 of 33 resultsSorted by cheapest first
1
2
3
4

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, June is the cheapest month in which you can book a flight from Sydney to Tonga (average of $424). Flying from Sydney to Tonga in December is currently the most expensive (average of $663). 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 16 March 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 55% of weekly flights between Sydney and Tonga have experienced delays in the past year, with the average delay time being 96 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 55% 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 16 March 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
8.1
Very Good
232 reviews
Check prices

Comfort

8.1

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Fiji Airways
8.1
Very Good
232 reviews
Fiji Airways
8.1
Very Good
232 reviews
Check prices

Comfort

8.1

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Air New Zealand
8.0
Very Good
610 reviews
Fiji Airways
8.1
Very Good
232 reviews
Check prices

Comfort

8.1

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Qantas Airways
7.5
Good
1,004 reviews
Fiji Airways
8.1
Very Good
232 reviews
Check prices

Comfort

8.1

Crew

8.5

Food

7.5

Boarding

8.2

Overall

8.1

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍

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, 1,582 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 16h 45m. 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 $257. Users have also found prices from $345 and $433 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 $710, our data shows the cheapest flight currently is $357. When looking at the most popular route, (Sydney Kingsford Smith - Nuku‘alofa Fua'Amotu Intl), you can expect to pay $577 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, June is the cheapest month in which you can book a flight from Sydney to Tonga (average of $424). Flying from Sydney to Tonga in December is currently the most expensive (average of $663). 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

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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 16 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$445Average$1,101FlexibilityNo cancel feeOn-time74%
Search Fiji Airways flights
Qantas AirwaysCheapest$590Average$855FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$724Average$986FlexibilityNo 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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