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Cheap flights from London Heathrow Airport to Tonga from £574

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TBU
25 May — 1 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Tonga

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Tonga
Explore the most affordable flight options available from Heathrow to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 April 2026.

Mon 25/509:30
LHR
-
TBU
3 stops37h 05m
Multiple Airlines
Thu 18/605:40
TBU
-
LHR
3 stops60h 45m
Multiple Airlines
Deal found 21/4£1,606
Tue 4/815:05
LHR
-
TBU
3 stops66h 25m
Multiple Airlines
Tue 25/820:55
TBU
-
LHR
3 stops71h 05m
Multiple Airlines
Deal found 24/4£1,987
Thu 17/920:35
LHR
-
TBU
2 stops35h 10m
Singapore Airlines
Mon 21/911:55
TBU
-
LHR
2 stops63h 50m
Singapore Airlines
Deal found 23/4£2,425
Sat 7/1120:35
LHR
-
TBU
2 stops34h 45m
Singapore Airlines
Wed 11/1111:20
TBU
-
LHR
2 stops44h 50m
Singapore Airlines
Deal found 24/4£2,442

Find flight deals from Heathrow to Tonga

Keep the following information in mind while searching for Heathrow to Tonga flight deals. Data was last updated 25 April 2026.

Round-trip from

£1,550

One-way from

£574
4/6-11/6
  • 4/6-11/6
  • 6 total stops
  • 106h 15m total
  • London to Tonga
Search Deals
11/5
  • 11/5
  • 3 total stops
  • 48h 45m total
  • London to Tonga
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 858,174 searches. Data last updated 25 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Tonga that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Mon 25/5

09:30-10:35

3 stops37h 05m

Nuku‘alofa Fua'Amotu Intl

Thu 18/6

05:40-06:25

3 stops60h 45m

£1,606

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Tue 4/8

15:05-21:30

3 stops66h 25m

Nuku‘alofa Fua'Amotu Intl

Tue 25/8

20:55-08:00

3 stops71h 05m

£1,987

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Thu 17/9

11:20-19:45

2 stops44h 25m

Nuku‘alofa Fua'Amotu Intl

Mon 21/9

11:55-05:55

2 stops54h 00m

£2,430
Cheapest one-way
Fastest single journey

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Mon 11/5

22:00-10:45

3 stops48h 45m

£574

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Sorted by cheapest first

Best time to book a flight from Heathrow to Tonga

Have a flexible travel schedule? Discover the best time to fly to Tonga from Heathrow 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 London Heathrow Airport to Tonga
No data available for this route at this time. Please check back soon.

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 25 April 2026.
Read reviews from past customers who have flown with Air New Zealand from London Heathrow Airport 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.
Air New Zealand
8.0
Very Good
632 reviews
Check prices

Entertainment

7.4

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very Good
632 reviews
Air New Zealand
8.0
Very Good
632 reviews
Check prices

Entertainment

7.4

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

Related info for your journey

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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.

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 airline flying from Heathrow to Tonga

Discover the top airline that operate flights from Heathrow 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 858,174 searches. Data last updated 25 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest£1,257Average£1,729FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights

Fly with Cheapflights

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

When you search for this flight from Heathrow to Tonga, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Tonga.

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

Need flexible booking options for your flight to Tonga from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Of course! You can now track prices for flights from Heathrow to Tonga and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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